1.
Hamburg
–
Hamburg, officially Freie und Hansestadt Hamburg, is the second largest city in Germany and the eighth largest city in the European Union. It is the second smallest German state by area and its population is over 1.7 million people, and the wider Hamburg Metropolitan Region covers more than 5.1 million inhabitants. The city is situated on the river Elbe, the official long name reflects Hamburgs history as a member of the medieval Hanseatic League, a free imperial city of the Holy Roman Empire, a city-state, and one of the 16 states of Germany. Before the 1871 Unification of Germany, it was a sovereign state. Prior to the changes in 1919, the civic republic was ruled by a class of hereditary grand burghers or Hanseaten. Though repeatedly destroyed by the Great Fire of Hamburg, the floods and military conflicts including WW2 bombing raids, the city managed to recover and emerge wealthier after each catastrophe. On the river Elbe, Hamburg is a port and a global service, media, logistics and industrial hub, with headquarters and facilities of Airbus, Blohm + Voss, Aurubis, Beiersdorf. The radio and television broadcaster NDR, Europes largest printing and publishing firm Gruner + Jahr, Hamburg has been an important financial centre for centuries, and is the seat of Germanys oldest stock exchange and the worlds second oldest bank, Berenberg Bank. The city is a fast expanding tourist destination for domestic and international visitors. It ranked 16th in the world for livability in 2015, the ensemble Speicherstadt and Kontorhausviertel was declared a World Heritage Site by the UNESCO in 2015. Hamburg is a major European science, research and education hub with several universities and institutes and its creative industries and major cultural venues include the renowned Elbphilharmonie and Laeisz concert halls, various art venues, music producers and artists. It is regarded as a haven for artists, gave birth to movements like Hamburger Schule. Hamburg is also known for theatres and a variety of musical shows. St. Paulis Reeperbahn is among the best known European entertainment districts, Hamburg is on the southern point of the Jutland Peninsula, between Continental Europe to the south and Scandinavia to the north, with the North Sea to the west and the Baltic Sea to the north-east. It is on the River Elbe at its confluence with the Alster, the city centre is around the Binnenalster and Außenalster, both formed by damming the River Alster to create lakes. The island of Neuwerk and two neighbouring islands Scharhörn and Nigehörn, in the Hamburg Wadden Sea National Park, are also part of Hamburg. The neighbourhoods of Neuenfelde, Cranz, Francop and Finkenwerder are part of the Altes Land region, neugraben-Fischbek has Hamburgs highest elevation, the Hasselbrack at 116.2 metres AMSL. Hamburg has a climate, influenced by its proximity to the coast
Hamburg
–
1st row: View of the
Binnenalster; 2nd row:
Große Freiheit,
Speicherstadt,
River Elbe; 3rd row: Alsterfleet; 4th row:
Port of Hamburg, Dockland office building
Hamburg
–
Hamburg, seen from the
International Space Station
Hamburg
–
Hamburg in 1150
Hamburg
–
Seal of 1241 (Replica)
2.
German Empire
–
The German Empire was the historical German nation state that existed from the unification of Germany in 1871 to the abdication of Kaiser Wilhelm II in 1918, when Germany became a federal republic. The German Empire consisted of 26 constituent territories, with most being ruled by royal families and this included four kingdoms, six grand duchies, five duchies, seven principalities, three free Hanseatic cities, and one imperial territory. Although Prussia became one of kingdoms in the new realm, it contained most of its population and territory. Its influence also helped define modern German culture, after 1850, the states of Germany had rapidly become industrialized, with particular strengths in coal, iron, chemicals, and railways. In 1871, it had a population of 41 million people, and by 1913, a heavily rural collection of states in 1815, now united Germany became predominantly urban. During its 47 years of existence, the German Empire operated as an industrial, technological, Germany became a great power, boasting a rapidly growing rail network, the worlds strongest army, and a fast-growing industrial base. In less than a decade, its navy became second only to Britains Royal Navy, after the removal of Chancellor Otto von Bismarck by Wilhelm II, the Empire embarked on a bellicose new course that ultimately led to World War I. When the great crisis of 1914 arrived, the German Empire had two allies, Italy and the Austro-Hungarian Empire, Italy, however, left the once the First World War started in August 1914. In the First World War, German plans to capture Paris quickly in autumn 1914 failed, the Allied naval blockade caused severe shortages of food. Germany was repeatedly forced to send troops to bolster Austria and Turkey on other fronts, however, Germany had great success on the Eastern Front, it occupied large Eastern territories following the Treaty of Brest-Litovsk. German declaration of unrestricted submarine warfare in early 1917 was designed to strangle the British, it failed, but the declaration—along with the Zimmermann Telegram—did bring the United States into the war. Meanwhile, German civilians and soldiers had become war-weary and radicalised by the Russian Revolution and this failed, and by October the armies were in retreat, Austria-Hungary and the Ottoman Empire had collapsed, Bulgaria had surrendered and the German people had lost faith in their political system. After at first attempting to control, causing massive uprisings. This left a republic to manage a devastated and unsatisfied populace, the German Confederation had been created by an act of the Congress of Vienna on 8 June 1815 as a result of the Napoleonic Wars, after being alluded to in Article 6 of the 1814 Treaty of Paris. German nationalism rapidly shifted from its liberal and democratic character in 1848, called Pan-Germanism and he envisioned a conservative, Prussian-dominated Germany. The war resulted in the Confederation being partially replaced by a North German Confederation in 1867, the new constitution and the title Emperor came into effect on 1 January 1871. During the Siege of Paris on 18 January 1871, William accepted to be proclaimed Emperor in the Hall of Mirrors at the Palace of Versailles. The second German Constitution was adopted by the Reichstag on 14 April 1871 and proclaimed by the Emperor on 16 April, the political system remained the same
German Empire
German Empire
–
Flag
German Empire
–
Otto von Bismarck
German Empire
–
A postage stamp from the
Carolines
3.
Dresden
–
Dresden is the capital city and, after Leipzig, the second-largest city of the Free State of Saxony in Germany. It is situated in a valley on the River Elbe, near the border with the Czech Republic, Dresden has a long history as the capital and royal residence for the Electors and Kings of Saxony, who for centuries furnished the city with cultural and artistic splendour. The city was known as the Jewel Box, because of its baroque, the controversial American and British bombing of Dresden in World War II towards the end of the war killed approximately 25,000, many of whom were civilians, and destroyed the entire city centre. After the war restoration work has helped to reconstruct parts of the inner city, including the Katholische Hofkirche, the Zwinger. Since German reunification in 1990 Dresden is again a cultural, educational and political centre of Germany, the Dresden University of Technology is one of the 10 largest universities in Germany and part of the German Universities Excellence Initiative. The economy of Dresden and its agglomeration is one of the most dynamic in Germany and it is dominated by high-tech branches, often called as “Silicon Saxony”. The city is one of the most visited in Germany with 4,3 million overnight stays per year. The royal buildings are among the most impressive buildings in Europe, main sights are also the nearby National Park of Saxon Switzerland, the Ore Mountains and the countryside around Elbe Valley and Moritzburg Castle. The most prominent building in the city of Dresden is the Frauenkirche, built in the 18th century, the church was destroyed during World War II. The remaining ruins were left for 50 years as a war memorial, the church was rebuilt from 1994 to 2005. Although Dresden is a relatively recent city of Germanic origin followed by settlement of Slavic people, Dresdens founding and early growth is associated with the eastward expansion of Germanic peoples, mining in the nearby Ore Mountains, and the establishment of the Margraviate of Meissen. Its name etymologically derives from Old Sorbian Drežďany, meaning people of the forest, Dresden later evolved into the capital of Saxony. Around the late 12th century, a Slavic settlement called Drežďany had developed on the southern bank, another settlement existed on the northern bank, but its Slavic name is unknown. It was known as Antiqua Dresdin by 1350, and later as Altendresden, dietrich, Margrave of Meissen, chose Dresden as his interim residence in 1206, as documented in a record calling the place Civitas Dresdene. After 1270, Dresden became the capital of the margraviate and it was given to Friedrich Clem after death of Henry the Illustrious in 1288. It was taken by the Margraviate of Brandenburg in 1316 and was restored to the Wettin dynasty after the death of Valdemar the Great in 1319, from 1485, it was the seat of the dukes of Saxony, and from 1547 the electors as well. The Elector and ruler of Saxony Frederick Augustus I became King Augustus II the Strong of Poland in personal union and he gathered many of the best musicians, architects and painters from all over Europe to the newly named Royal-Polish Residential City of Dresden. His reign marked the beginning of Dresdens emergence as a leading European city for technology, during the reign of Kings Augustus II the Strong and Augustus III of Poland the Zwinger Royal Palace, the Hofkirche and the Frauenkirche were built
Dresden
–
Clockwise: Dresden at night,
Dresden Frauenkirche,
Schloss Pillnitz,
Dresden Castle and
Zwinger.
Dresden
–
The
Fürstenzug —the Saxon sovereigns depicted in
Meissen porcelain
Dresden
–
Dresden in 1521
Dresden
–
Image of Dresden during the 1890s, before extensive World War II destruction. Landmarks include
Dresden Frauenkirche,
Augustus Bridge, and
Katholische Hofkirche.
4.
Germany
–
Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of 357,021 square kilometres, with about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular destination in the world. Germanys capital and largest metropolis is Berlin, while its largest conurbation is the Ruhr, other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart, Düsseldorf and Leipzig. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity, a region named Germania was documented before 100 AD. During the Migration Period the Germanic tribes expanded southward, beginning in the 10th century, German territories formed a central part of the Holy Roman Empire. During the 16th century, northern German regions became the centre of the Protestant Reformation, in 1871, Germany became a nation state when most of the German states unified into the Prussian-dominated German Empire. After World War I and the German Revolution of 1918–1919, the Empire was replaced by the parliamentary Weimar Republic, the establishment of the national socialist dictatorship in 1933 led to World War II and the Holocaust. After a period of Allied occupation, two German states were founded, the Federal Republic of Germany and the German Democratic Republic, in 1990, the country was reunified. In the 21st century, Germany is a power and has the worlds fourth-largest economy by nominal GDP. As a global leader in industrial and technological sectors, it is both the worlds third-largest exporter and importer of goods. Germany is a country with a very high standard of living sustained by a skilled. It upholds a social security and universal health system, environmental protection. Germany was a member of the European Economic Community in 1957. It is part of the Schengen Area, and became a co-founder of the Eurozone in 1999, Germany is a member of the United Nations, NATO, the G8, the G20, and the OECD. The national military expenditure is the 9th highest in the world, the English word Germany derives from the Latin Germania, which came into use after Julius Caesar adopted it for the peoples east of the Rhine. This in turn descends from Proto-Germanic *þiudiskaz popular, derived from *þeudō, descended from Proto-Indo-European *tewtéh₂- people, the discovery of the Mauer 1 mandible shows that ancient humans were present in Germany at least 600,000 years ago. The oldest complete hunting weapons found anywhere in the world were discovered in a mine in Schöningen where three 380, 000-year-old wooden javelins were unearthed
Germany
–
The
Nebra sky disk is dated to c. 1600 BC.
Germany
–
Flag
Germany
–
Martin Luther (1483–1546) initiated the
Protestant Reformation.
Germany
–
Foundation of the
German Empire in
Versailles, 1871.
Bismarck is at the center in a white uniform.
5.
Soviet atomic bomb project
–
The project was directed by Soviet nuclear physicist Igor Kurchatov, while the military logistics and intelligence efforts were undertaken and managed by NKVD peoples commissar Lavrentiy Beria. The Soviet Union benefited from highly successful efforts on the part of the GRU of the Soviet General Staff. However, because of the bloody and intensified war with Nazi Germany, the Soviets accelerated the program after the American atomic bombings of Hiroshima and Nagasaki. The Soviet atomic project was charged with gathering intelligence on the German nuclear energy project as well as the American nuclear efforts, after the war, the Soviet Union expanded its research facilities, military reactors, and employed many scientists. With the success of this test, the Soviet Union became the nation after the United States to detonate a nuclear device. In early 1930s, the Soviets were instrumental to the advancement of nuclear physics, the Soviet interest in nuclear physics had begun in the early 1930s, an era in which a variety of important nuclear discoveries and achievements were made. Even before the Russian revolution and the February Revolution, the mineralogist Vladimir Vernadsky had made a number of calls for a survey of Russias uranium deposits. The main motivation for research at the time was radium, which had scientific as well as medical uses. The soviet Atomic Bomb Project has its roots all the way back in the 1910s, the research being done was not officially institutionalized until 1922 when the Radium Institute in Petrograd opened. Through the thirties there were other institutions opened across the nation. It is important to acknowledge that the research and institutions were all a part of civil society and this meant that the military did not directly control the progress being made. In 1940, a commission was set up to address the Uranium Problem allowing intelligentsia to study nuclear fission, although significant ground had been broke the majority of research would be abandoned during World War II. Russia would spend the four years in conflict with Europe. Flyorov deduced that this meant such research had been classified, creation in 1943 of Laboratory No.2 under the Academy of Sciences of the USSR was the first stage of the Soviet atomic bomb project. When the United States tested the Atom Bomb in 1945 Stalin decided to push the intellectuals even harder and they appointed a special committee that was fully funded. This committee was headed by Beria who was now in charge of a group of specialists in science. Again it is important to note that Stalin did not include military men. Instead he put those from the party, civilians, and secret police in charge, on April 9,1946, the Council of Ministers of the USSR adopted the resolution on creation of Design Office#11 to develop an atomic bomb
Soviet atomic bomb project
–
The fathers of the Soviet nuclear program, Dr.
Andrei Sakharov (left) with Dr.
Igor Kurchatov (right).
Soviet atomic bomb project
–
RDS-1, the first Soviet
atomic test.
Soviet atomic bomb project
–
The mushroom cloud from the first air-dropped bomb test in 1951. This picture is confused with RDS-27 and
RDS-37 tests.
6.
Electron microscopy
–
An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. Transmission electron microscopes use electrostatic and electromagnetic lenses to control the electron beam and these electron optical lenses are analogous to the glass lenses of an optical light microscope. Industrially, electron microscopes are used for quality control and failure analysis. Modern electron microscopes produce electron micrographs using specialized digital cameras and frame grabbers to capture the image, the first electromagnetic lens was developed in 1926 by Hans Busch. According to Dennis Gabor, the physicist Leó Szilárd tried in 1928 to convince Busch to build an electron microscope, two years later, in 1933, Ruska built an electron microscope that exceeded the resolution attainable with an optical microscope. Moreover, Reinhold Rudenberg, the director of Siemens-Schuckertwerke, obtained the patent for the electron microscope in May 1931. In 1932, Ernst Lubcke of Siemens & Halske built and obtained images from an electron microscope. Five years later, the firm financed the work of Ernst Ruska and Bodo von Borries, also in 1937, Manfred von Ardenne pioneered the scanning electron microscope. The first commercial electron microscope was produced in 1938 by Siemens, although contemporary transmission electron microscopes are capable of two million-power magnification, as scientific instruments, they remain based upon Ruska’s prototype. The original form of electron microscope, the electron microscope uses a high voltage electron beam to illuminate the specimen. The electron beam is produced by a gun, commonly fitted with a tungsten filament cathode as the electron source. When it emerges from the specimen, the electron beam carries information about the structure of the specimen that is magnified by the lens system of the microscope. The image detected by the camera may be displayed on a monitor or computer. The resolution of TEMs is limited primarily by spherical aberration, but a new generation of aberration correctors have been able to partially overcome spherical aberration to increase resolution. The ability to determine the positions of atoms within materials has made the HRTEM an important tool for nano-technologies research, transmission electron microscopes are often used in electron diffraction mode. The major disadvantage of the electron microscope is the need for extremely thin sections of the specimens. Biological specimens are required to be chemically fixed, dehydrated and embedded in a polymer resin to stabilize them sufficiently to allow ultrathin sectioning. Sections of biological specimens, organic polymers and similar materials may require treatment with heavy atom labels in order to achieve the required image contrast
Electron microscopy
–
A 1973
Siemens electron microscope,
Musée des Arts et Métiers,
Paris
Electron microscopy
–
Diagram of a transmission electron microscope
Electron microscopy
–
Electron microscope constructed by
Ernst Ruska in 1933
Electron microscopy
–
RCA Model EMT3 Desktop electron microscope, 1950
7.
Isotope separation
–
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is various, the largest variety is used in research. By tonnage, separating natural uranium into enriched uranium and depleted uranium is the largest application, in the following text, mainly the uranium enrichment is considered. This process is a one in the manufacture of uranium fuel for nuclear power stations. Plutonium-based weapons use plutonium produced in a reactor, which must be operated in such a way as to produce plutonium already of suitable isotopic mix or grade. There are three types of separation techniques, Those based directly on the atomic weight of the isotope. Those based on the differences in chemical reaction rates produced by different atomic weights. Those based on properties not directly connected to atomic weight, such as nuclear resonances, the third type of separation is still experimental, practical separation techniques all depend in some way on the atomic mass. It is therefore easier to separate isotopes with a larger relative mass difference. For example, deuterium has twice the mass of ordinary hydrogen, all large-scale isotope separation schemes employ a number of similar stages which produce successively higher concentrations of the desired isotope. Each stage enriches the product of the step further before being sent to the next stage. Similarly, the tailings from each stage are returned to the stage for further processing. This creates a sequential enriching system called a cascade, there are two important factors that affect the performance of a cascade. The first is the factor, which is a number greater than 1. The second is the number of required stages to get the desired purity, to date, large-scale commercial isotope separation of only three elements has occurred. Hydrogen isotopes have been separated to prepare heavy water for use as a moderator in nuclear reactors, lithium-6 has been concentrated for use in thermonuclear weapons. The only alternative to separation is to manufacture the required isotope in its pure form. This may be done by irradiation of a target, but care is needed in target selection
Isotope separation
–
A cascade of gas centrifuges at a U.S. uranium enrichment plant.
8.
Cathode-ray tube
–
The cathode ray tube is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam onto the screen to create the images, the images may represent electrical waveforms, pictures, radar targets, or others. CRTs have also used as memory devices, in which case the visible light emitted from the fluorescent material is not intended to have significant meaning to a visual observer. In television sets and computer monitors, the front area of the tube is scanned repetitively and systematically in a fixed pattern called a raster. An image is produced by controlling the intensity of each of the three beams, one for each additive primary color with a video signal as a reference. A CRT is constructed from an envelope which is large, deep, fairly heavy. The interior of a CRT is evacuated to approximately 0.01 Pa to 133 nPa. evacuation being necessary to facilitate the flight of electrons from the gun to the tubes face. That it is evacuated makes handling an intact CRT potentially dangerous due to the risk of breaking the tube and causing a violent implosion that can hurl shards of glass at great velocity. As a matter of safety, the face is made of thick lead glass so as to be highly shatter-resistant and to block most X-ray emissions. Flat panel displays can also be made in large sizes, whereas 38 to 40 was about the largest size of a CRT television, flat panels are available in 60. Cathode rays were discovered by Johann Hittorf in 1869 in primitive Crookes tubes and he observed that some unknown rays were emitted from the cathode which could cast shadows on the glowing wall of the tube, indicating the rays were traveling in straight lines. In 1890, Arthur Schuster demonstrated cathode rays could be deflected by electric fields, the earliest version of the CRT was known as the Braun tube, invented by the German physicist Ferdinand Braun in 1897. It was a diode, a modification of the Crookes tube with a phosphor-coated screen. In 1907, Russian scientist Boris Rosing used a CRT in the end of an experimental video signal to form a picture. He managed to display simple geometric shapes onto the screen, which marked the first time that CRT technology was used for what is now known as television. The first cathode ray tube to use a hot cathode was developed by John B. Johnson and Harry Weiner Weinhart of Western Electric and it was named by inventor Vladimir K. Zworykin in 1929. RCA was granted a trademark for the term in 1932, it released the term to the public domain in 1950. The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934, in oscilloscope CRTs, electrostatic deflection is used, rather than the magnetic deflection commonly used with television and other large CRTs
Cathode-ray tube
–
A 14 inch cathode ray tube showing its deflection coils and electron guns
Cathode-ray tube
–
Cutaway rendering of a color CRT: 1. Three electron guns (for red, green, and blue phosphor dots) 2. Electron beams 3. Focusing coils 4. Deflection coils 5. Anode connection 6. Mask for separating beams for red, green, and blue part of displayed image 7. Phosphor layer with red, green, and blue zones 8. Close-up of the phosphor-coated inner side of the screen
Cathode-ray tube
–
Typical 1950s United States television set
Cathode-ray tube
–
A flat CRT assembly inside a 1984 Sinclair FTV1 pocket TV
9.
Stalin Prize
–
The USSR State Prize was the Soviet Unions state honor. It was established on September 9,1966, after the breakup of the Soviet Union, the prize was followed up by the State Prize of the Russian Federation. The State Stalin Prize, usually called the Stalin Prize, existed from 1941 to 1954 – some sources give an incorrect date of 1952. It essentially played the role, therefore upon the establishment of the USSR State Prize. In 1944 and 1945, the last two years of the Second World War the award ceremonies for the Stalin Prize were not held, instead, in 1946 the ceremony was held twice, in January for the works created in 1943–1944 and in June for the works of 1945. Often the prize was awarded to specific works rather than to individuals, each constituent Soviet republic and autonomous republic also had a State Prize. The Stalin Prize was a different from the Stalin Peace Prize. The latter was created on 21 December 1949 and was awarded to foreign recipients rather than to Soviet citizens. It should also not be confused with the Lenin Prize, rameyev, N. Trubnikov, A. Tsygankin, Yu. Isaak Dunaevsky, Music to the film The Kuban Cossacks Gevorg Emin, book of poetry New Road Bruno Freindlich, algis Petras Piskarskas, nonlinear optics Eugen Doga
Stalin Prize
–
Stalin Prize badge on a
stamp
Stalin Prize
–
State Prize badge
10.
National Prize of East Germany
–
The National Prize of the German Democratic Republic was an award of the German Democratic Republic given out in three different classes for scientific, artistic, and other meritorious achievement. With scientific achievements, it was given to entire research groups rather than individual scientists. The National Prize was awarded on 7 October, Day of the Republic every year since 1949 and this coveted award could be given to East German citizens, groups, and even foreigners provided they made crucial contributions to socialist culture and science. The National Prize was awarded in three classes, with corresponding monetary awards for each class, on the reverse are the words National Award circled by a pair of laurel wreaths. The ribbon bar consisted of the vertical bars consisting of the colors of black, red. The medal was worn on the right side of the chest. Band 1, VEB Deutscher Verlag der Wissenschaften, Berlin 1960
National Prize of East Germany
–
Nationalpreis der DDR / DDR National Prize
11.
Lenin Medal
–
The Order of Lenin, named after the leader of the Russian October Revolution, was the highest decoration bestowed by the Soviet Union. Those who were awarded the titles Hero of the Soviet Union and it was also bestowed on cities, companies, factories, regions, military units and ships. Corporate entities, various institutions and military units who received the said Order applied the full name of the order into their official titles. The order was established by the Central Executive Committee on April 6,1930, the first design of the Order of Lenin was sculpted by Pyotr Tayozhny and Ivan Shadr based on sketches by Ivan Dubasov. It was made by Goznak of silver with some lightly gold-plated features and it was a round badge with a central disc featuring Vladimir Lenins profile surrounded by smokestacks, a tractor and a building, possibly a power plant. A thin red-enamelled border and a circle of wheat panicles surrounded the disc, at the top was a gold-plated hammer and sickle emblem, and at the bottom were the Russian initials for USSR in red enamel. Only about 800 of this design were minted, the second design was awarded from 1934 until 1936. This was a gold badge, featuring an silver plated disc bearing Lenins portrait. The disc is surrounded by two golden panicles of wheat, and a red flag with LENIN in Cyrillic script, a red star is placed on the left and the hammer and sickle emblem at the bottom, both in red enamel. The third design was awarded from 1936 till 1943, design was same as previous, but central disc was gray enamelled and Lenins portrait was separate piece made of platinum fixed by rivets. The fourth design was awarded from 1943 till 1991, design was same as previous, but was worn as a medal suspended from a ribbon. The badge was worn by screwback on the left chest without ribbon. Later it was worn as a suspended from a red ribbon with pairs of yellow stripes at the edges. The ribbon bar is of the same design, the portrait of Lenin was originally a riveted silver piece. For a time it was incorporated into a gold badge. The first Order of Lenin was awarded to the newspaper Komsomolskaya Pravda on 23 May 1930, also among the first ten recipients were five industrial companies, three pilots, and the Secretary to the Central Executive Committee Avel Enukidze. The first person to be awarded a second Order of Lenin was the pilot Valery Chkalov in 1936, another pilot, Vladimir Kokkinaki, became the first to receive a third Order in 1939. The first five recipients, a German and four Americans, received the award for helping in the reconstruction of Soviet industry
Lenin Medal
–
The Order of Lenin, type 1
12.
Colani
–
Luigi Colani, is a German industrial designer of kurdish descent. His long career began in the 1950s when he designed cars for such as Fiat, Alfa Romeo, Lancia, Volkswagen. In 1957, he dropped his given first name Lutz and henceforth went by the name of Luigi, a striking grand piano created by Colani is manufactured and sold by the Schimmel piano company. His unconventional designs have made him famous, not only in design circles and he has received numerous design awards, although his unconventional approach has left him largely an outsider from the mainstream of industrial design. The prime characteristic of his designs are the rounded, organic forms and his kitchen satellite from 1969 is the most prominent example of this school of thought. The earth is round, all the bodies are round. This same image of circular globe-shaped mini worlds orbiting around each other follows us right down to the micro-cosmos and we are even aroused by round forms in species propagation related eroticism. Why should I join the mass who want to make everything angular. I am going to pursue Galileo Galileis philosophy, my world is also round, born in Berlin, Colani is of Kurdish and Polish descent and his father came from Madulain near St. Moritz in eastern Switzerland. He studied sculpture and painting at the Academy of Arts, Berlin in 1946 and in 1948, he undertook the study of aerodynamics at the Sorbonne in Paris, France. By 1953, he was living in California where he was Head of New Materials project group at McDonnell Douglas in California, a constant innovator, by 1958 he was also interested in sailing vessels. His catamaran design was a success in Hawaii. Returning to cars, in 1959 he introduced the worlds first monocoque car, the BMW700, and in 1960 the worlds first kit car in series, the Colani GT. In 1966 he showed his sports coupe design at the IAA in Frankfurt and he also rebodied an Abarth Alfa Romeo design, based on two wrecked Abarth 1000 GT Coupés in the early 1960s. In 1968, for Thai Airlines, he developed a two piece plastic cutlery set which the Museum of Design, Zürich added to its collection. He had developed a sufficient reputation and income by 1970 to establish a studio with a design team at Harkotten Castle near Sassenberg. The studio was an success, with work and exhibitions worldwide for many major companies. Meanwhile, he continued with his innovations in car design, including his 1972 design of the Eifelland Formula One car and this period saw him making his first forays into the Japanese market, when he obtained contracts from Japanese companies for the first time
Colani
–
Luigi Colani in front of his
BMW 700 in the exhibition "COLANI – Das Lebenswerk" (
Karlsruhe) in 2004.
Colani
–
Truck prototype designed by Colani
Colani
–
Truck prototype Designs by Colani
Colani
–
Personal Computer for Vobis
13.
Applied Physics
–
Applied physics is physics which is intended for a particular technological or practical use. It is usually considered as a bridge or a connection between physics and engineering and this approach is similar to that of applied mathematics. Applied physicists can also be interested in the use of physics for scientific research, for instance, the field of accelerator physics can contribute to research in theoretical physics by working with engineers enabling design and construction of high-energy colliders
Applied Physics
–
Experiment using a
laser
Applied Physics
–
A
magnetic resonance image
Applied Physics
–
Computer modeling of the
space shuttle during re-entry
14.
TU Dresden
–
The name Technische Universität Dresden has only been used since 1961, the history of the university, however, goes back nearly 200 years to 1828. The university is a member of TU9, a consortium of the nine leading German Institutes of Technology, the university is one of eleven German universities which succeeded in the Excellence Initiative in 2012, thus getting the title of a University of Excellence. The TU Dresden succeeded in all three rounds of the German Universities Excellence Initiative, in 1828, with emerging industrialization, the Saxon Technical School was founded to educate skilled workers in technological subjects such as mechanics, mechanical engineering and ship construction. In 1871, the year the German Empire was founded, the institute was renamed the Royal Saxon Polytechnic Institute, at that time, subjects not connected with technology, such as history and languages, were introduced. By the end of the 19th century the institute had developed into a university covering all disciplines, in 1961 it was given its present name, the Dresden University of Technology. Upon German reunification in 1990, the university had already integrated the College of Forestry, formerly the Royal Saxony Academy of Forestry, some faculties were newly founded, the faculties of Information Technology, Law, Education and Economics. With 4,390 students the Faculty of Mathematics and the Natural Sciences is the second-largest faculty at the university and it is composed of 5 departments, Biology, Chemistry, Mathematics, Physics and Psychology. The departments are all located on the main campus, in 2006, a new research building for the biology department opened. The Faculty of Architecture comprises 6 departments, currently, there are 1,410 students enrolled. The Faculty of Civil Engineering is structured into 11 departments and it is the oldest and smallest of the faculties. There are currently 800 students enrolled, the Faculty of Electrical Engineering and Information Technology is organized into 13 departments. The faculty is the heart of the so-called Silicon Saxony in Dresden, the Faculty of Environmental Sciences has 2,914 students. The faculty is located on the campus, except for the Forestry department which is located in Tharandt. The Forestry department is the oldest of its kind in Germany and its history goes back to the foundation of the Royal Saxon Academy of Forestry in 1816. The Faculty of Mechanical Engineering comprises 19 departments and has 5,731 students and it is the largest faculty at TUD. The Faculty of Economics comprises five departments, Business Education Studies, Business Management, Economics, Management Information Systems, the Faculty of Education, located East of the main campus, has 2,075 students. The Faculty of Languages, Literature and Culture is structured into five departments, American Studies, English Studies, German Studies, Philology, Romance Languages, there are 3,215 students at this faculty. The Faculty of Law is going to close in the few years
TU Dresden
–
Georg-Schumann-Building of the Dresden University of Technology
TU Dresden
–
Technische Universität Dresden
TU Dresden
–
TH Dresden 1905
TU Dresden
–
The main auditorium
15.
Siegmund Loewe
–
Loewe Technologies GmbH is the parent company of the German Loewe group. The Loewe group develops, manufactures and sells a variety of electronic, electrical and mechanical products and systems. The company was founded in Berlin in 1923 by brothers Siegmund, the company has its headquarters and sole production facilities in Kronach, Franconia. Today, the range has expanded to include televisions, Blu-ray players, DVD recorders, hard disk recorders, multiroom systems, speakers, the trend is shifting from individual products to complete home entertainment systems. Loewe is also represented internationally by sales partners and subsidiaries and these include subsidiaries in the Benelux countries, France, Italy and the UK. There are exclusive Loewe Galeries acting as flagship stores in cities around the world, including Amsterdam, Copenhagen, Hong Kong, Amman, London, Madrid, Moscow, Paris, Rome. It all began in 1923 in Berlin, when Dr Siegmund Loewe and their work with the young physicist Manfred von Ardenne in 1926 led to the development of the triple tube, which was first used in the Loewe OE333 radio receiver. This tube prompted Loewe’s multi-tube production and is lauded as the world’s first integrated circuit. Television development began at Loewe in 1929, the company worked together with British television pioneer John Logie Baird. In 1931, Manfred von Ardenne presented the world’s first fully electronic television to the public on the Loewe stand at the 8th Berlin Radio Show. When Hitler came to power in Germany, Siegmund Loewe had to emigrate to the USA in 1938, in 1949, Siegmund Loewe regained possession of company property and took over as chairman of the supervisory board. In the 1950s, Loewe began producing the Optaphon, the first cassette tape recorder,1961 saw the first European video recorder, the Optacord 500, enter mass production. In 1962, the company tradition ended with the death of Siegmund Loewe. Subsidiaries of the Philips group took over the majority of shares, under this management, which continued until 1985, the company increasingly specialised in the development and production of televisions. In 1963, the first portable television, Loewe Optaport, was launched and it had a 25 cm screen and built-in FM radio. The first Loewe colour televisions were launched along with the introduction of television in Germany. In 1979 Loewe introduced an integrated chassis television production. The first European stereo television followed in 1981, in 1985, management made Loewe a privately owned company again after Philips sold its shares
Siegmund Loewe
–
Loewe head office in Berlin, 1923
Siegmund Loewe
–
Loewe Technologies GmbH
Siegmund Loewe
–
Siegmund Loewe & Manfred von Ardenne
Siegmund Loewe
–
Loewe local receiver, 1926
16.
German people
–
Germans are a Germanic ethnic group native to Central Europe, who share a common German ancestry, culture and history. German is the mother tongue of a substantial majority of ethnic Germans. The English term Germans has historically referred to the German-speaking population of the Holy Roman Empire since the Late Middle Ages, before the collapse of communism and the reunification of Germany in 1990, Germans constituted the largest divided nation in Europe by far. Ever since the outbreak of the Protestant Reformation within the Holy Roman Empire, of approximately 100 million native speakers of German in the world, roughly 80 million consider themselves Germans. Thus, the number of Germans lies somewhere between 100 and more than 150 million, depending on the criteria applied. Today, people from countries with German-speaking majorities most often subscribe to their own national identities, the German term Deutsche originates from the Old High German word diutisc, referring to the Germanic language of the people. It is not clear how commonly, if at all, the word was used as an ethnonym in Old High German, used as a noun, ein diutscher in the sense of a German emerges in Middle High German, attested from the second half of the 12th century. The Old French term alemans is taken from the name of the Alamanni and it was loaned into Middle English as almains in the early 14th century. The word Dutch is attested in English from the 14th century, denoting continental West Germanic dialects, while in most Romance languages the Germans have been named from the Alamanni, the Old Norse, Finnish and Estonian names for the Germans were taken from that of the Saxons. In Slavic languages, the Germans were given the name of němьci, originally with a meaning foreigner, the English term Germans is only attested from the mid-16th century, based on the classical Latin term Germani used by Julius Caesar and later Tacitus. It gradually replaced Dutch and Almains, the latter becoming mostly obsolete by the early 18th century, the Germans are a Germanic people, who as an ethnicity emerged during the Middle Ages. Originally part of the Holy Roman Empire, around 300 independent German states emerged during its decline after the Peace of Westphalia in 1648 ending the Thirty Years War and these states eventually formed into modern Germany in the 19th century. The concept of a German ethnicity is linked to Germanic tribes of antiquity in central Europe, the early Germans originated on the North German Plain as well as southern Scandinavia. By the 2nd century BC, the number of Germans was significantly increasing and they began expanding into eastern Europe, during antiquity these Germanic tribes remained separate from each other and did not have writing systems at that time. In the European Iron Age the area that is now Germany was divided into the La Tène horizon in Southern Germany and the Jastorf culture in Northern Germany. By 55 BC, the Germans had reached the Danube river and had either assimilated or otherwise driven out the Celts who had lived there, and had spread west into what is now Belgium and France. Conflict between the Germanic tribes and the forces of Rome under Julius Caesar forced major Germanic tribes to retreat to the east bank of the Rhine, in Roman-held territories with Germanic populations, the Germanic and Roman peoples intermarried, and Roman, Germanic, and Christian traditions intermingled. The adoption of Christianity would later become an influence in the development of a common German identity
German people
German people
–
Germanic Kingdoms in Europe c. 500 AD
German people
–
Extent of
Holy Roman Empire in 972 (red line) and 1035 (red dots) with
Kingdom of Germany marked in blue
German people
–
18 January 1871: The proclamation of the
German Empire in the
Hall of Mirrors of the
Palace of Versailles.
Bismarck appears in white. The Grand Duke of Baden stands beside Wilhelm, leading the cheers. Crown Prince Friedrich, later
Friedrich III, stands on his father's right.
17.
Physicist
–
A physicist is a scientist who has specialized knowledge in the field of physics, the exploration of the interactions of matter and energy across the physical universe. A physicist is a scientist who specializes or works in the field of physics, physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists can also apply their knowledge towards solving real-world problems or developing new technologies, some physicists specialize in sectors outside the science of physics itself, such as engineering. The study and practice of physics is based on a ladder of discoveries. Many mathematical and physical ideas used today found their earliest expression in ancient Greek culture and Asian culture, the bulk of physics education can be said to flow from the scientific revolution in Europe, starting with the work of Galileo and Kepler in the early 1600s. New knowledge in the early 21st century includes an increase in understanding physical cosmology. The term physicist was coined by William Whewell in his 1840 book The Philosophy of the Inductive Sciences, many physicist positions require an undergraduate degree in applied physics or a related science or a Masters degree like MSc, MPhil, MPhys or MSci. In a research oriented level, students tend to specialize in a particular field, Physics students also need training in mathematics, and also in computer science and programming. For being employed as a physicist a doctoral background may be required for certain positions, undergraduate students like BSc Mechanical Engineering, BSc Electrical and Computer Engineering, BSc Applied Physics. etc. With physics orientation are chosen as research assistants with faculty members, the highest honor awarded to physicists is the Nobel Prize in Physics, awarded since 1901 by the Royal Swedish Academy of Sciences. The three major employers of career physicists are academic institutions, laboratories, and private industries, with the largest employer being the last, physicists in academia or government labs tend to have titles such as Assistants, Professors, Sr. /Jr. As per the American Institute for Physics, some 20% of new physics Ph. D. s holds jobs in engineering development programs, while 14% turn to computer software, a majority of physicists employed apply their skills and training to interdisciplinary sectors. For industry or self-employment. and also in science and programming. Hence a majority of Physics bachelors degree holders are employed in the private sector, other fields are academia, government and military service, nonprofit entities, labs and teaching
Physicist
–
Albert Einstein, physicist who developed the theory of general relativity.
18.
Inventor
–
An invention is a unique or novel device, method, composition or process. The invention process is a process within an overall engineering and product development process and it may be an improvement upon a machine or product or a new process for creating an object or a result. An invention that achieves a unique function or result may be a radical breakthrough. Such works are novel and not obvious to others skilled in the same field, an inventor may be taking a big step in success or failure. A patent legally protects the property rights of the inventor. The rules and requirements for patenting an invention vary from country to country, another meaning of invention is cultural invention, which is an innovative set of useful social behaviours adopted by people and passed on to others. The Institute for Social Inventions collected many such ideas in magazines, Invention is also an important component of artistic and design creativity. Inventions often extend the boundaries of knowledge, experience or capability. Brainstorming also can spark new ideas for an invention, collaborative creative processes are frequently used by engineers, designers, architects and scientists. Co-inventors are frequently named on patents, in addition, many inventors keep records of their working process - notebooks, photos, etc. including Leonardo da Vinci, Galileo Galilei, Evangelista Torricelli, Thomas Jefferson and Albert Einstein. In the process of developing an invention, the idea may change. The invention may become simpler, more practical, it may expand, working on one invention can lead to others too. History shows that turning the concept of an invention into a device is not always swift or direct. Inventions may also more useful after time passes and other changes occur. For example, the became more useful once powered flight was a reality. Invention is often a creative process, an open and curious mind allows an inventor to see beyond what is known. Seeing a new possibility, connection, or relationship can spark an invention, inventive thinking frequently involves combining concepts or elements from different realms that would not normally be put together. Sometimes inventors disregard the boundaries between distinctly separate territories or fields, several concepts may be considered when thinking about invention
Inventor
–
' BUILD YOUR OWN TELEVISION RECEIVER.'
Science and Invention magazine cover, November 1928
Inventor
–
Alessandro Volta with the first
electrical battery. Volta is recognized as one of the most influential inventors of all time.
Inventor
–
Thomas Edison with
phonograph. Edison is considered one of the most prolific inventors in history, holding
1,093 U.S. patents in his name.
Inventor
–
A rare 1884 photo showing the experimental recording of voice patterns by a photographic process at the
Alexander Graham Bell Laboratory in Washington, D.C. Many of their experimental designs panned out in failure.
19.
Patent
–
A patent is a set of exclusive rights granted by a sovereign state to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention. An invention is a solution to a technological problem and is a product or a process. Patents are a form of intellectual property, the procedure for granting patents, requirements placed on the patentee, and the extent of the exclusive rights vary widely between countries according to national laws and international agreements. Typically, however, a patent application must include one or more claims that define the invention. A patent may include many claims, each of which defines a specific property right and these claims must meet relevant patentability requirements, such as novelty, usefulness, and non-obviousness. Nevertheless, there are variations on what is patentable subject matter from country to country, the word patent originates from the Latin patere, which means to lay open. More directly, it is a version of the term letters patent. Similar grants included land patents, which were land grants by early state governments in the USA, and printing patents, a precursor of modern copyright. In modern usage, the term patent usually refers to the granted to anyone who invents any new, useful. The additional qualification utility patent is used to distinguish the primary meaning from these other types of patents. Particular species of patents for inventions include biological patents, business method patents, chemical patents, the period of protection was 10 years. These were mostly in the field of glass making, as Venetians emigrated, they sought similar patent protection in their new homes. This led to the diffusion of patent systems to other countries, by the 16th century, the English Crown would habitually abuse the granting of letters patent for monopolies. After public outcry, King James I of England was forced to revoke all existing monopolies, the Statute became the foundation for later developments in patent law in England and elsewhere. Important developments in patent law emerged during the 18th century through a process of judicial interpretation of the law. During the reign of Queen Anne, patent applications were required to supply a complete specification of the principles of operation of the invention for public access. Influenced by the philosophy of John Locke, the granting of patents began to be viewed as a form of property right. The English legal system became the foundation for patent law in countries with a common law heritage, including the United States, New Zealand, in the Thirteen Colonies, inventors could obtain patents through petition to a given colonys legislature
Patent
–
U.S patent
Patent
–
James Puckle 's 1718
early autocannon was one of the first inventions required to provide a specification for a patent.
Patent
–
The plate of the Martin
ejector seat of a military aircraft, stating that the design is covered by multiple patents in Britain, South Africa, Canada and "others".
Dübendorf Museum of Military Aviation.
20.
Nuclear technology
–
Nuclear technology is technology that involves the reactions of atomic nuclei. Among the notable nuclear technologies are nuclear reactors, nuclear medicine and it is also used, among other things, in smoke detectors and gun sights. The vast majority of common, natural phenomena on Earth only involve gravity and electromagnetism and this is because atomic nuclei are generally kept apart because they contain positive electrical charges and therefore repel each other. In 1896, Henri Becquerel was investigating phosphorescence in uranium salts when he discovered a new phenomenon which came to be called radioactivity and he, Pierre Curie and Marie Curie began investigating the phenomenon. In the process, they isolated the element radium, which is highly radioactive and they discovered that radioactive materials produce intense, penetrating rays of three distinct sorts, which they labeled alpha, beta, and gamma after the Greek letters. Some of these kinds of radiation could pass through ordinary matter, all of the early researchers received various radiation burns, much like sunburn, and thought little of it. The new phenomenon of radioactivity was seized upon by the manufacturers of quack medicine, gradually it was realized that the radiation produced by radioactive decay was ionizing radiation, and that even quantities too small to burn could pose a severe long-term hazard. Many of the working on radioactivity died of cancer as a result of their exposure. Radioactive patent medicines mostly disappeared, but other applications of radioactive materials persisted, as the atom came to be better understood, the nature of radioactivity became clearer. Some larger atomic nuclei are unstable, and so decay after a random interval, the three forms of radiation that Becquerel and the Curies discovered are also more fully understood. Alpha decay is when a nucleus releases an alpha particle, which is two protons and two neutrons, equivalent to a helium nucleus, beta decay is the release of a beta particle, a high-energy electron. Gamma decay releases gamma rays, which unlike alpha and beta radiation are not matter but electromagnetic radiation of high frequency. This type of radiation is the most dangerous and most difficult to block, all three types of radiation occur naturally in certain elements. In natural nuclear radiation, the byproducts are very small compared to the nuclei from which they originate, Nuclear fission is the process of splitting a nucleus into roughly equal parts, and releasing energy and neutrons in the process. If these neutrons are captured by another unstable nucleus, they can fission as well, the average number of neutrons released per nucleus that go on to fission another nucleus is referred to as k. Values of k larger than 1 mean that the reaction is releasing more neutrons than it absorbs. A mass of fissile material large enough to induce a chain reaction is called a critical mass. When a neutron is captured by a nucleus, fission may occur immediately
Nuclear technology
–
A residential
smoke detector is the most familiar piece of nuclear technology for some people
21.
Plasma physics
–
Plasma is one of the four fundamental states of matter, the others being solid, liquid, and gas. Yet unlike these three states of matter, plasma does not naturally exist on the Earth under normal surface conditions, the term was first introduced by chemist Irving Langmuir in the 1920s. However, true plasma production is from the separation of these ions and electrons that produces an electric field. Based on the environmental temperature and density either partially ionised or fully ionised forms of plasma may be produced. The positive charge in ions is achieved by stripping away electrons from atomic nuclei, the number of electrons removed is related to either the increase in temperature or the local density of other ionised matter. Plasma may be the most abundant form of matter in the universe, although this is currently tentative based on the existence. Plasma is mostly associated with the Sun and stars, extending to the rarefied intracluster medium, Plasma was first identified in a Crookes tube, and so described by Sir William Crookes in 1879. The nature of the Crookes tube cathode ray matter was identified by British physicist Sir J. J. The term plasma was coined by Irving Langmuir in 1928, perhaps because the glowing discharge molds itself to the shape of the Crookes tube and we shall use the name plasma to describe this region containing balanced charges of ions and electrons. Plasma is a neutral medium of unbound positive and negative particles. Although these particles are unbound, they are not ‘free’ in the sense of not experiencing forces, in turn this governs collective behavior with many degrees of variation. The average number of particles in the Debye sphere is given by the plasma parameter, bulk interactions, The Debye screening length is short compared to the physical size of the plasma. This criterion means that interactions in the bulk of the plasma are more important than those at its edges, when this criterion is satisfied, the plasma is quasineutral. Plasma frequency, The electron plasma frequency is compared to the electron-neutral collision frequency. When this condition is valid, electrostatic interactions dominate over the processes of ordinary gas kinetics, for plasma to exist, ionization is necessary. The term plasma density by itself refers to the electron density, that is. The degree of ionization of a plasma is the proportion of atoms that have lost or gained electrons, even a partially ionized gas in which as little as 1% of the particles are ionized can have the characteristics of a plasma. The degree of ionization, α, is defined as α = n i n i + n n, where n i is the number density of ions and n n is the number density of neutral atoms
Plasma physics
–
Plasma
Plasma physics
Plasma physics
Plasma physics
22.
World War II
–
World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the worlds countries—including all of the great powers—eventually forming two opposing alliances, the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. Marked by mass deaths of civilians, including the Holocaust and the bombing of industrial and population centres. These made World War II the deadliest conflict in human history, from late 1939 to early 1941, in a series of campaigns and treaties, Germany conquered or controlled much of continental Europe, and formed the Axis alliance with Italy and Japan. Under the Molotov–Ribbentrop Pact of August 1939, Germany and the Soviet Union partitioned and annexed territories of their European neighbours, Poland, Finland, Romania and the Baltic states. In December 1941, Japan attacked the United States and European colonies in the Pacific Ocean, and quickly conquered much of the Western Pacific. The Axis advance halted in 1942 when Japan lost the critical Battle of Midway, near Hawaii, in 1944, the Western Allies invaded German-occupied France, while the Soviet Union regained all of its territorial losses and invaded Germany and its allies. During 1944 and 1945 the Japanese suffered major reverses in mainland Asia in South Central China and Burma, while the Allies crippled the Japanese Navy, thus ended the war in Asia, cementing the total victory of the Allies. World War II altered the political alignment and social structure of the world, the United Nations was established to foster international co-operation and prevent future conflicts. The victorious great powers—the United States, the Soviet Union, China, the United Kingdom, the Soviet Union and the United States emerged as rival superpowers, setting the stage for the Cold War, which lasted for the next 46 years. Meanwhile, the influence of European great powers waned, while the decolonisation of Asia, most countries whose industries had been damaged moved towards economic recovery. Political integration, especially in Europe, emerged as an effort to end pre-war enmities, the start of the war in Europe is generally held to be 1 September 1939, beginning with the German invasion of Poland, Britain and France declared war on Germany two days later. The dates for the beginning of war in the Pacific include the start of the Second Sino-Japanese War on 7 July 1937, or even the Japanese invasion of Manchuria on 19 September 1931. Others follow the British historian A. J. P. Taylor, who held that the Sino-Japanese War and war in Europe and its colonies occurred simultaneously and this article uses the conventional dating. Other starting dates sometimes used for World War II include the Italian invasion of Abyssinia on 3 October 1935. The British historian Antony Beevor views the beginning of World War II as the Battles of Khalkhin Gol fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939, the exact date of the wars end is also not universally agreed upon. It was generally accepted at the time that the war ended with the armistice of 14 August 1945, rather than the formal surrender of Japan
World War II
–
Clockwise from top left: Chinese forces in the
Battle of Wanjialing, Australian
25-pounder guns during the
First Battle of El Alamein, German
Stuka dive bombers on the
Eastern Front in December 1943, a U.S. naval force in the
Lingayen Gulf,
Wilhelm Keitel signing the
German Instrument of Surrender, Soviet troops in the
Battle of Stalingrad
World War II
–
The
League of Nations assembly, held in
Geneva,
Switzerland, 1930
World War II
–
Adolf Hitler at a German
National Socialist political rally in
Weimar, October 1930
World War II
–
Italian soldiers recruited in 1935, on their way to fight the
Second Italo-Abyssinian War
23.
Soviet Union
–
The Soviet Union, officially the Union of Soviet Socialist Republics was a socialist state in Eurasia that existed from 1922 to 1991. It was nominally a union of national republics, but its government. The Soviet Union had its roots in the October Revolution of 1917 and this established the Russian Socialist Federative Soviet Republic and started the Russian Civil War between the revolutionary Reds and the counter-revolutionary Whites. In 1922, the communists were victorious, forming the Soviet Union with the unification of the Russian, Transcaucasian, Ukrainian, following Lenins death in 1924, a collective leadership and a brief power struggle, Joseph Stalin came to power in the mid-1920s. Stalin suppressed all opposition to his rule, committed the state ideology to Marxism–Leninism. As a result, the country underwent a period of rapid industrialization and collectivization which laid the foundation for its victory in World War II and postwar dominance of Eastern Europe. Shortly before World War II, Stalin signed the Molotov–Ribbentrop Pact agreeing to non-aggression with Nazi Germany, in June 1941, the Germans invaded the Soviet Union, opening the largest and bloodiest theater of war in history. Soviet war casualties accounted for the highest proportion of the conflict in the effort of acquiring the upper hand over Axis forces at battles such as Stalingrad. Soviet forces eventually captured Berlin in 1945, the territory overtaken by the Red Army became satellite states of the Eastern Bloc. The Cold War emerged by 1947 as the Soviet bloc confronted the Western states that united in the North Atlantic Treaty Organization in 1949. Following Stalins death in 1953, a period of political and economic liberalization, known as de-Stalinization and Khrushchevs Thaw, the country developed rapidly, as millions of peasants were moved into industrialized cities. The USSR took a lead in the Space Race with Sputnik 1, the first ever satellite, and Vostok 1. In the 1970s, there was a brief détente of relations with the United States, the war drained economic resources and was matched by an escalation of American military aid to Mujahideen fighters. In the mid-1980s, the last Soviet leader, Mikhail Gorbachev, sought to reform and liberalize the economy through his policies of glasnost. The goal was to preserve the Communist Party while reversing the economic stagnation, the Cold War ended during his tenure, and in 1989 Soviet satellite countries in Eastern Europe overthrew their respective communist regimes. This led to the rise of strong nationalist and separatist movements inside the USSR as well, in August 1991, a coup détat was attempted by Communist Party hardliners. It failed, with Russian President Boris Yeltsin playing a role in facing down the coup. On 25 December 1991, Gorbachev resigned and the twelve constituent republics emerged from the dissolution of the Soviet Union as independent post-Soviet states
Soviet Union
–
Vladimir Lenin addressing a crowd with Trotsky, 1920
Soviet Union
–
Flag
Soviet Union
–
Stalin and
Nikolai Yezhov, head of the
NKVD. After Yezhov was executed, he was
edited out of the image.
Soviet Union
24.
Elisabeth von Ardenne
–
Effi Briest is a realist novel by Theodor Fontane. Published in book form in 1896, Effi Briest marks both a watershed and a climax in the realism of literature. It can be compared to other novels on 19th century marriage from a female perspective, such as Anna Karenina and Madame Bovary. Effi Briest, who is attracted by social status, moves to the fictional Pomeranian port of Kessin and her husband is away for weeks at a time, and Effi, who is shunned by local nobles, finds but one friend. Her suspicions that their house may be haunted are not entirely laid to rest by Innstetten, when she says there may be a ghost, he derides her fears. The scorn he would bear if people knew of her terror would stall his career, when Major Crampas arrives, Effi cannot help but relish his attentions despite his being a married womaniser, and their love is consummated. Her husband looks down on Crampas, whom he finds a lewd philanderer with cavalier views of law, Crampas views Innstetten as a patronising prig. Years later, Effi’s daughter Annie is growing up, and the moves to Berlin due to Innstetten’s ascent. All seems well, but when Effi’s letters to Crampas are found by her husband and he gets custody of Annie and influences her to disdain Effi. When Effi and Annie meet briefly some years later, it is clear the two are estranged, and Effi stops trying to establish a relationship with Annie. The Briests disown Effi, thinking it ill behooves them to deal with someone who tarnished their name, Innstetten tells Crampas he wants to duel, he agrees and is killed by Innstetten. But the halcyon days of Innstettens past life are over, effis parents take her back when she becomes the victim of nervous disorder, depression. Facing death, she asks Luise to tell Innstetten about her regrets and her death forms a rather symmetrical ending that matches the novel’s start. In the end scene, her parents vaguely concede guilt for her fate without daring to question the social canons that sparked the tragedy, citing the German maxim, manfred von Ardenne’s grandmother Baroness Elisabeth von Ardenne is said to have inspired Effi Briest. The youngest of five children, Elisabeth was born in Zerben in 1853 and her easeful life was cut short by her meeting Armand Léon von Ardenne. She is said to have little interest in Ardenne, having rejected his first proposal, she changed her mind during the Franco-Prussian War. They became engaged on 7 February 1871 and wed in 1873 and his ascent made them move to Düsseldorf in the summer of 1881, where they met the famed and unhappily married judge Emil Hartwich. Elisabeth and Hartwich had much in common including their love of theatre, despite risk of discovery, they did not cease corresponding when the Ardennes went back to Berlin on 1 October 1884
Elisabeth von Ardenne
–
Cover of the original edition
25.
Effi Briest
–
Effi Briest is a realist novel by Theodor Fontane. Published in book form in 1896, Effi Briest marks both a watershed and a climax in the realism of literature. It can be compared to other novels on 19th century marriage from a female perspective, such as Anna Karenina and Madame Bovary. Effi Briest, who is attracted by social status, moves to the fictional Pomeranian port of Kessin and her husband is away for weeks at a time, and Effi, who is shunned by local nobles, finds but one friend. Her suspicions that their house may be haunted are not entirely laid to rest by Innstetten, when she says there may be a ghost, he derides her fears. The scorn he would bear if people knew of her terror would stall his career, when Major Crampas arrives, Effi cannot help but relish his attentions despite his being a married womaniser, and their love is consummated. Her husband looks down on Crampas, whom he finds a lewd philanderer with cavalier views of law, Crampas views Innstetten as a patronising prig. Years later, Effi’s daughter Annie is growing up, and the moves to Berlin due to Innstetten’s ascent. All seems well, but when Effi’s letters to Crampas are found by her husband and he gets custody of Annie and influences her to disdain Effi. When Effi and Annie meet briefly some years later, it is clear the two are estranged, and Effi stops trying to establish a relationship with Annie. The Briests disown Effi, thinking it ill behooves them to deal with someone who tarnished their name, Innstetten tells Crampas he wants to duel, he agrees and is killed by Innstetten. But the halcyon days of Innstettens past life are over, effis parents take her back when she becomes the victim of nervous disorder, depression. Facing death, she asks Luise to tell Innstetten about her regrets and her death forms a rather symmetrical ending that matches the novel’s start. In the end scene, her parents vaguely concede guilt for her fate without daring to question the social canons that sparked the tragedy, citing the German maxim, manfred von Ardenne’s grandmother Baroness Elisabeth von Ardenne is said to have inspired Effi Briest. The youngest of five children, Elisabeth was born in Zerben in 1853 and her easeful life was cut short by her meeting Armand Léon von Ardenne. She is said to have little interest in Ardenne, having rejected his first proposal, she changed her mind during the Franco-Prussian War. They became engaged on 7 February 1871 and wed in 1873 and his ascent made them move to Düsseldorf in the summer of 1881, where they met the famed and unhappily married judge Emil Hartwich. Elisabeth and Hartwich had much in common including their love of theatre, despite risk of discovery, they did not cease corresponding when the Ardennes went back to Berlin on 1 October 1884
Effi Briest
–
Cover of the original edition
26.
Theodor Fontane
–
Theodor Fontane was a German novelist and poet, regarded by many as the most important 19th-century German-language realist writer. Fontane was born in Neuruppin, a town 30 miles northwest of Berlin, at the age of sixteen he was apprenticed to an apothecary, his fathers profession. He became an apothecary himself, and in 1839, at the age of 20 and his further education was in Leipzig where he came into contact with the progressives of the Vormärz. Fontanes first published work, the novella Geschwisterliebe, appeared in the Berlin Figaro in December 1839 and his biographer Gordon A. Fontanes first job as apothecary was in Dresden, after which he returned to his fathers shop in the provincial town of Letschin in the Oderbruch region. Fleeing its provincial atmosphere, Fontane published articles in the Leipzig newspaper Die Eisenbahn, in 1844 Fontane enlisted in the Prussian army and set out on the first of numerous journeys to England which fostered his interest in Old English ballads, a form he began to imitate. He became engaged to his wife, Emilie Rouanet-Kummer, whom he had met when still at school. He briefly participated in the events of 1848. In 1849 he quit his job as an apothecary and became a full-time journalist, there he specialized in British affairs, and the agency made him for several years its correspondent in London, where he was later joined by his wife and two sons. While still in London, he quit his government job, Fontanes books about Britain include Ein Sommer in London, Aus England, Studien und Briefe and Jenseit des Tweed, Bilder und Briefe aus Schottland. The success of the novels of Walter Scott had helped to make British themes much en vogue on the continent. Fontanes Gedichte and ballads Männer und Helden tell of Britains former glories, back in Germany, Fontane became particularly interested in his home province, the March of Brandenburg. He enjoyed rambling through its rural landscapes and small towns and delighted in the growth of its capital city, in 1870, he quit his job at the Kreuzzeitung and became drama critic for the liberal Vossische Zeitung, a position he held until retirement. He had already written about Prussias war against Denmark in Der schleswig-holsteinische Krieg im Jahre 1864 and he went to the front to observe the Franco-Prussian War in 1870, and, after being taken prisoner at Vaucouleurs, remained in French captivity for three months. He set down his experiences in Kriegsgefangen Erlebtes 1870 and published his observations on the campaign in Der Krieg gegen Frankreich 1870–71, at the age of 57 Fontane finally set to work in the genre for which he is remembered, the novel. A fine historical romance, Vor dem Sturm was followed by a series of novels of life, notably LAdultera. In his novels Irrungen, Wirrungen, Frau Jenny Treibel and Effi Briest, he found his own tone, yielding insights into the lives of the nobility and his achievement there was later described as poetic realism. In Der Stechlin, his last completed novel, Fontane adapted the realistic methods, Fontane died on 20 September 1898, in Berlin. As a member of the French Protestant Church of Berlin, he was buried in the cemetery on the Liesenstraße
Theodor Fontane
–
Theodor Fontane
Theodor Fontane
–
"Modern Book Printing" from the
Walk of Ideas in Berlin, Germany – built in 2006 to commemorate
Johannes Gutenberg 's invention, c. 1445, of movable printing type.
Theodor Fontane
–
Fontane, ca. 1860
Theodor Fontane
–
Graves of Theodor and Emilie Fontane in the Französische Friedhof, Liesenstraße, Berlin.
27.
German language
–
German is a West Germanic language that is mainly spoken in Central Europe. It is the most widely spoken and official language in Germany, Austria, Switzerland, South Tyrol, the German-speaking Community of Belgium and it is also one of the three official languages of Luxembourg. Major languages which are most similar to German include other members of the West Germanic language branch, such as Afrikaans, Dutch, English, Luxembourgish and it is the second most widely spoken Germanic language, after English. One of the languages of the world, German is the first language of about 95 million people worldwide. The German speaking countries are ranked fifth in terms of publication of new books. German derives most of its vocabulary from the Germanic branch of the Indo-European language family, a portion of German words are derived from Latin and Greek, and fewer are borrowed from French and English. With slightly different standardized variants, German is a pluricentric language, like English, German is also notable for its broad spectrum of dialects, with many unique varieties existing in Europe and also other parts of the world. The history of the German language begins with the High German consonant shift during the migration period, when Martin Luther translated the Bible, he based his translation primarily on the standard bureaucratic language used in Saxony, also known as Meißner Deutsch. Copies of Luthers Bible featured a long list of glosses for each region that translated words which were unknown in the region into the regional dialect. Roman Catholics initially rejected Luthers translation, and tried to create their own Catholic standard of the German language – the difference in relation to Protestant German was minimal. It was not until the middle of the 18th century that a widely accepted standard was created, until about 1800, standard German was mainly a written language, in urban northern Germany, the local Low German dialects were spoken. Standard German, which was different, was often learned as a foreign language with uncertain pronunciation. Northern German pronunciation was considered the standard in prescriptive pronunciation guides though, however, German was the language of commerce and government in the Habsburg Empire, which encompassed a large area of Central and Eastern Europe. Until the mid-19th century, it was essentially the language of townspeople throughout most of the Empire and its use indicated that the speaker was a merchant or someone from an urban area, regardless of nationality. Some cities, such as Prague and Budapest, were gradually Germanized in the years after their incorporation into the Habsburg domain, others, such as Pozsony, were originally settled during the Habsburg period, and were primarily German at that time. Prague, Budapest and Bratislava as well as cities like Zagreb, the most comprehensive guide to the vocabulary of the German language is found within the Deutsches Wörterbuch. This dictionary was created by the Brothers Grimm and is composed of 16 parts which were issued between 1852 and 1860, in 1872, grammatical and orthographic rules first appeared in the Duden Handbook. In 1901, the 2nd Orthographical Conference ended with a standardization of the German language in its written form
German language
–
Old Frisian (Alt-Friesisch)
German language
–
The widespread popularity of the
Bible translated into German by
Martin Luther helped establish modern German
German language
–
Examples of German language in
Namibian everyday life
German language
–
German-language newspapers in the U.S. in 1922
28.
Novel
–
A novel is any relatively long piece of written narrative fiction, normally in prose, and typically published as a book. The genre has also described as possessing, a continuous. This view sees the novels origins in Classical Greece and Rome, medieval, early modern romance, the latter, an Italian word used to describe short stories, supplied the present generic English term in the 18th century. The romance is a closely related long prose narrative, Romance, as defined here, should not be confused with the genre fiction love romance or romance novel. Other European languages do not distinguish between romance and novel, a novel is le roman, der Roman, il romanzo, a novel is a long, fictional narrative which describes intimate human experiences. Most European languages use the word romance for extended narratives, fictionality is most commonly cited as distinguishing novels from historiography. However this can be a problematic criterion, historians would also invent and compose speeches for didactic purposes. Novels can, on the hand, depict the social, political and personal realities of a place and period with clarity. Even in the 19th century, fictional narratives in verse, such as Lord Byrons Don Juan, Alexander Pushkins Yevgeniy Onegin, vikram Seths The Golden Gate, composed of 590 Onegin stanzas, is a more recent example of the verse novel. Both in 12th-century Japan and 15th-century Europe, prose fiction created intimate reading situations, on the other hand, verse epics, including the Odyssey and Aeneid, had been recited to a select audiences, though this was a more intimate experience than the performance of plays in theaters. A new world of Individualistic fashion, personal views, intimate feelings, secret anxieties, conduct and gallantry spread with novels, the novel is today the longest genre of narrative prose fiction, followed by the novella, short story, and flash fiction. However, in the 17th century critics saw the romance as of epic length, the length of a novel can still be important because most literary awards use length as a criterion in the ranking system. Urbanization and the spread of printed books in Song Dynasty China led to the evolution of oral storytelling into consciously fictional novels by the Ming dynasty, parallel European developments did not occur for centuries, and awaited the time when the availability of paper allowed for similar opportunities. By contrast, Ibn Tufails Hayy ibn Yaqdhan and Ibn al-Nafis Theologus Autodidactus are works of didactic philosophy, in this sense, Hayy ibn Yaqdhan would be considered an early example of a philosophical novel, while Theologus Autodidactus would be considered an early theological novel. Epic poetry exhibits some similarities with the novel, and the Western tradition of the novel back into the field of verse epics. Then at the beginning of the 18th century, French prose translations brought Homers works to a wider public, longus is the author of the famous Greek novel, Daphnis and Chloe. Romance or chivalric romance is a type of narrative in prose or verse popular in the circles of High Medieval. In later romances, particularly those of French origin, there is a tendency to emphasize themes of courtly love
Novel
–
Madame de Pompadour spending her afternoon with a book, 1756.
Novel
Novel
–
Paper as the essential carrier:
Murasaki Shikibu writing her
The Tale of Genji in the early 11th century, 17th-century depiction
Novel
–
Chaucer reciting
Troilus and Criseyde: early-15th-century manuscript of the work at
Corpus Christi College, Cambridge
29.
Radar
–
Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the objects location and speed. Radar was developed secretly for military use by several nations in the period before, the term RADAR was coined in 1940 by the United States Navy as an acronym for RAdio Detection And Ranging or RAdio Direction And Ranging. The term radar has since entered English and other languages as a common noun, high tech radar systems are associated with digital signal processing, machine learning and are capable of extracting useful information from very high noise levels. Other systems similar to make use of other parts of the electromagnetic spectrum. One example is lidar, which uses ultraviolet, visible, or near infrared light from lasers rather than radio waves, as early as 1886, German physicist Heinrich Hertz showed that radio waves could be reflected from solid objects. In 1895, Alexander Popov, an instructor at the Imperial Russian Navy school in Kronstadt. The next year, he added a spark-gap transmitter, in 1897, while testing this equipment for communicating between two ships in the Baltic Sea, he took note of an interference beat caused by the passage of a third vessel. In his report, Popov wrote that this phenomenon might be used for detecting objects, the German inventor Christian Hülsmeyer was the first to use radio waves to detect the presence of distant metallic objects. In 1904, he demonstrated the feasibility of detecting a ship in dense fog and he obtained a patent for his detection device in April 1904 and later a patent for a related amendment for estimating the distance to the ship. He also got a British patent on September 23,1904 for a radar system. It operated on a 50 cm wavelength and the radar signal was created via a spark-gap. In 1915, Robert Watson-Watt used radio technology to advance warning to airmen. Watson-Watt became an expert on the use of direction finding as part of his lightning experiments. As part of ongoing experiments, he asked the new boy, Arnold Frederic Wilkins, Wilkins made an extensive study of available units before selecting a receiver model from the General Post Office. Its instruction manual noted that there was fading when aircraft flew by, in 1922, A. Hoyt Taylor and Leo C. Taylor submitted a report, suggesting that this might be used to detect the presence of ships in low visibility, eight years later, Lawrence A. Australia, Canada, New Zealand, and South Africa followed prewar Great Britain, and Hungary had similar developments during the war. Hugon, began developing a radio apparatus, a part of which was installed on the liner Normandie in 1935
Radar
–
Long-range radar
antenna, used to track space objects and ballistic missiles.
Radar
–
Radar of the type used for detection of aircraft. It rotates steadily, sweeping the airspace with a narrow beam.
Radar
–
Experimental radar antenna, US
Naval Research Laboratory, Anacostia, D. C., late 1930s
Radar
–
A
Chain Home tower in Great Baddow, United Kingdom
30.
Abitur
–
Abitur is a university-preparatory school leaving qualification in Germany, Lithuania, Finland, and Estonia. It is conferred to students who pass their exams at the end of their secondary education. As a matriculation examination, Abitur can be compared to A-level, Matura or the International Baccalaureate Diploma, thus, it encompasses the functions of both a school graduation certificate and a college entrance exam. The official term in Germany for this certificate of education is Allgemeine Hochschulreife, in 2005, a total of 231,465 students passed the Abitur exam in Germany. The numbers have risen steadily and in 2012, a total of 305,172 students obtained the Allgemeine Hochschulreife and this number, reflecting those who pass the traditional Abitur at their high school, is, however, lower than the total count. Adding the 51,912 students who obtained the Hochschulreife at vocational training schools, if those who obtain the Fachhochschulreife are also added, then the total of those who obtained the right to study at a university or a Fachhochschule is 501,483. Until the 18th century, every German university had its own entrance examination, in 1788 Prussia introduced the Abiturreglement, a law, for the first time within Germany, establishing the Abitur as an official qualification. It was later established in the other German states. In 1834, it became the university entrance exam in Prussia. Since then, the German state of Hesse allows students with Fachhochschulreife to study at the universities within that state, the academic level of the Abitur is comparable to the International Baccalaureate, the GCE Advanced Level and the Advanced Placement tests. Indeed, the requirements for the International Baccalaureate differ little from the German exam requirements. It is the only school-leaving certificate in all states of Germany that allows the graduate to move directly to university, the other school leaving certificates, the Hauptschulabschluss and the Realschulabschluss, do not allow their holders to matriculate at a university. However, the Abitur is not the path to university studies. Students who successfully passed a Begabtenprüfung are also eligible, a person who does not hold the Abitur and did not take an aptitude test may still be admitted to university by completing at least the 10th grade and doing well on an IQ-Test. The official meaning behind the word Abitur in Germany is Zeugnis der allgemeinen Hochschulreife, during the two final years of secondary school studies and in their final exams, students receive grades on a scale of 15 to 0 points. The points are weighted and then added up and converted to the grade on a scale from 1 to 6. Student who receive 13.72 points or more on average in all courses, in German, the European Baccalaureate is called europäisches Abitur, and the International Baccalaureate is called internationales Abitur, both not to be confused with the German Abitur. The term Fachabitur was used in all of Western Germany for a variation of the Abitur until the 1990s and this qualification includes only one foreign language
Abitur
–
The German Abitur is typically attained at a
Gymnasium, such as
Internatsgymnasium Torgelow in
Mecklenburg.
Abitur
–
This German Abiturient wrote on his car: "Class of 2008, Not knowing anything, but knowing where it is written; Abipedia" (a
portmanteau word compiled from Abitur and
Wikipedia)
31.
Physics
–
Physics is the natural science that involves the study of matter and its motion and behavior through space and time, along with related concepts such as energy and force. One of the most fundamental disciplines, the main goal of physics is to understand how the universe behaves. Physics is one of the oldest academic disciplines, perhaps the oldest through its inclusion of astronomy, Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the mechanisms of other sciences while opening new avenues of research in areas such as mathematics. Physics also makes significant contributions through advances in new technologies that arise from theoretical breakthroughs, the United Nations named 2005 the World Year of Physics. Astronomy is the oldest of the natural sciences, the stars and planets were often a target of worship, believed to represent their gods. While the explanations for these phenomena were often unscientific and lacking in evidence, according to Asger Aaboe, the origins of Western astronomy can be found in Mesopotamia, and all Western efforts in the exact sciences are descended from late Babylonian astronomy. The most notable innovations were in the field of optics and vision, which came from the works of many scientists like Ibn Sahl, Al-Kindi, Ibn al-Haytham, Al-Farisi and Avicenna. The most notable work was The Book of Optics, written by Ibn Al-Haitham, in which he was not only the first to disprove the ancient Greek idea about vision, but also came up with a new theory. In the book, he was also the first to study the phenomenon of the pinhole camera, many later European scholars and fellow polymaths, from Robert Grosseteste and Leonardo da Vinci to René Descartes, Johannes Kepler and Isaac Newton, were in his debt. Indeed, the influence of Ibn al-Haythams Optics ranks alongside that of Newtons work of the same title, the translation of The Book of Optics had a huge impact on Europe. From it, later European scholars were able to build the devices as what Ibn al-Haytham did. From this, such important things as eyeglasses, magnifying glasses, telescopes, Physics became a separate science when early modern Europeans used experimental and quantitative methods to discover what are now considered to be the laws of physics. Newton also developed calculus, the study of change, which provided new mathematical methods for solving physical problems. The discovery of new laws in thermodynamics, chemistry, and electromagnetics resulted from greater research efforts during the Industrial Revolution as energy needs increased, however, inaccuracies in classical mechanics for very small objects and very high velocities led to the development of modern physics in the 20th century. Modern physics began in the early 20th century with the work of Max Planck in quantum theory, both of these theories came about due to inaccuracies in classical mechanics in certain situations. Quantum mechanics would come to be pioneered by Werner Heisenberg, Erwin Schrödinger, from this early work, and work in related fields, the Standard Model of particle physics was derived. Areas of mathematics in general are important to this field, such as the study of probabilities, in many ways, physics stems from ancient Greek philosophy
Physics
–
Further information:
Outline of physics
Physics
–
Ancient
Egyptian astronomy is evident in monuments like the
ceiling of Senemut's tomb from the
Eighteenth Dynasty of Egypt.
Physics
–
Sir Isaac Newton (1643–1727), whose
laws of motion and
universal gravitation were major milestones in classical physics
Physics
–
Albert Einstein (1879–1955), whose work on the
photoelectric effect and the
theory of relativity led to a revolution in 20th century physics
32.
Chemistry
–
Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter. Chemistry is sometimes called the science because it bridges other natural sciences, including physics. For the differences between chemistry and physics see comparison of chemistry and physics, the history of chemistry can be traced to alchemy, which had been practiced for several millennia in various parts of the world. The word chemistry comes from alchemy, which referred to a set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism. An alchemist was called a chemist in popular speech, and later the suffix -ry was added to this to describe the art of the chemist as chemistry, the modern word alchemy in turn is derived from the Arabic word al-kīmīā. In origin, the term is borrowed from the Greek χημία or χημεία and this may have Egyptian origins since al-kīmīā is derived from the Greek χημία, which is in turn derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian. Alternately, al-kīmīā may derive from χημεία, meaning cast together, in retrospect, the definition of chemistry has changed over time, as new discoveries and theories add to the functionality of the science. The term chymistry, in the view of noted scientist Robert Boyle in 1661, in 1837, Jean-Baptiste Dumas considered the word chemistry to refer to the science concerned with the laws and effects of molecular forces. More recently, in 1998, Professor Raymond Chang broadened the definition of chemistry to mean the study of matter, early civilizations, such as the Egyptians Babylonians, Indians amassed practical knowledge concerning the arts of metallurgy, pottery and dyes, but didnt develop a systematic theory. Greek atomism dates back to 440 BC, arising in works by such as Democritus and Epicurus. In 50 BC, the Roman philosopher Lucretius expanded upon the theory in his book De rerum natura, unlike modern concepts of science, Greek atomism was purely philosophical in nature, with little concern for empirical observations and no concern for chemical experiments. Work, particularly the development of distillation, continued in the early Byzantine period with the most famous practitioner being the 4th century Greek-Egyptian Zosimos of Panopolis. He formulated Boyles law, rejected the four elements and proposed a mechanistic alternative of atoms. Before his work, though, many important discoveries had been made, the Scottish chemist Joseph Black and the Dutchman J. B. English scientist John Dalton proposed the theory of atoms, that all substances are composed of indivisible atoms of matter. Davy discovered nine new elements including the alkali metals by extracting them from their oxides with electric current, british William Prout first proposed ordering all the elements by their atomic weight as all atoms had a weight that was an exact multiple of the atomic weight of hydrogen. The inert gases, later called the noble gases were discovered by William Ramsay in collaboration with Lord Rayleigh at the end of the century, thereby filling in the basic structure of the table. Organic chemistry was developed by Justus von Liebig and others, following Friedrich Wöhlers synthesis of urea which proved that organisms were, in theory
Chemistry
–
Solutions of substances in reagent bottles, including
ammonium hydroxide and
nitric acid, illuminated in different colors
Chemistry
–
Democritus ' atomist philosophy was later adopted by
Epicurus (341–270 BCE).
Chemistry
–
Antoine-Laurent de Lavoisier is considered the "Father of Modern Chemistry".
Chemistry
–
Laboratory, Institute of Biochemistry,
University of Cologne.
33.
Mathematics
–
Mathematics is the study of topics such as quantity, structure, space, and change. There is a range of views among mathematicians and philosophers as to the exact scope, Mathematicians seek out patterns and use them to formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proof, when mathematical structures are good models of real phenomena, then mathematical reasoning can provide insight or predictions about nature. Through the use of abstraction and logic, mathematics developed from counting, calculation, measurement, practical mathematics has been a human activity from as far back as written records exist. The research required to solve mathematical problems can take years or even centuries of sustained inquiry, rigorous arguments first appeared in Greek mathematics, most notably in Euclids Elements. Galileo Galilei said, The universe cannot be read until we have learned the language and it is written in mathematical language, and the letters are triangles, circles and other geometrical figures, without which means it is humanly impossible to comprehend a single word. Without these, one is wandering about in a dark labyrinth, carl Friedrich Gauss referred to mathematics as the Queen of the Sciences. Benjamin Peirce called mathematics the science that draws necessary conclusions, David Hilbert said of mathematics, We are not speaking here of arbitrariness in any sense. Mathematics is not like a game whose tasks are determined by arbitrarily stipulated rules, rather, it is a conceptual system possessing internal necessity that can only be so and by no means otherwise. Albert Einstein stated that as far as the laws of mathematics refer to reality, they are not certain, Mathematics is essential in many fields, including natural science, engineering, medicine, finance and the social sciences. Applied mathematics has led to entirely new mathematical disciplines, such as statistics, Mathematicians also engage in pure mathematics, or mathematics for its own sake, without having any application in mind. There is no clear line separating pure and applied mathematics, the history of mathematics can be seen as an ever-increasing series of abstractions. The earliest uses of mathematics were in trading, land measurement, painting and weaving patterns, in Babylonian mathematics elementary arithmetic first appears in the archaeological record. Numeracy pre-dated writing and numeral systems have many and diverse. Between 600 and 300 BC the Ancient Greeks began a study of mathematics in its own right with Greek mathematics. Mathematics has since been extended, and there has been a fruitful interaction between mathematics and science, to the benefit of both. Mathematical discoveries continue to be made today, the overwhelming majority of works in this ocean contain new mathematical theorems and their proofs. The word máthēma is derived from μανθάνω, while the modern Greek equivalent is μαθαίνω, in Greece, the word for mathematics came to have the narrower and more technical meaning mathematical study even in Classical times
Mathematics
–
Euclid (holding
calipers), Greek mathematician, 3rd century BC, as imagined by
Raphael in this detail from
The School of Athens.
Mathematics
–
Greek mathematician
Pythagoras (c. 570 – c. 495 BC), commonly credited with discovering the
Pythagorean theorem
Mathematics
–
Leonardo Fibonacci, the
Italian mathematician who established the Hindu–Arabic numeral system to the Western World
Mathematics
–
Carl Friedrich Gauss, known as the prince of mathematicians
34.
Autodidact
–
Autodidacticism or self-education is the education without the guidance of masters or institutions. Generally, an autodidact is an individual who chooses the subject they will study, their studying material, an autodidact may or may not have formal education, and their study may be either a complement or an alternative to it. Many notable contributions have made by autodidacts. The related term didacticism defines an artistic philosophy of education, various terms are used to describe self-education. One such is heutagogy, coined in 2000 by Stewart Hase and Chris Kenyon of Southern Cross University in Australia, others are self-directed learning, in the heutagogy paradigm, a learner should be at the centre of his or her own learning. Autodidacticism is sometimes a complement of modern education, as a complement to education, students would be encouraged to do more independent work. The Industrial Revolution created a new situation for self-directed learners, before the 20th century, only a small minority of people received an advanced academic education. As stated by Joseph Whitworth in his report on industry dated from 1853. However, even in the US, most children were not completing high school, high school education was necessary to become a teacher. In modern times, a percentage of those completing high school also attended college, usually to pursue a professional degree, such as law or medicine. For many professions or for personal knowledge, however, formal education is not so necessary today due to the availability of free information on the Internet. Whereas in the past, one of the benefits of going to college was to gain access to their superior libraries, today access to facts. Financial analyst and author Peter Schiff, for one, says that never before in history has it been so easy to be self-educated, collegiate teaching was based on the classics until the early 19th century. There were few if any institutions of higher learning offering studies in engineering or science before 1800, institutions such as the Royal Society did much to promote scientific learning, including public lectures. In England, there were also itinerant lecturers offering their service, prior to the 19th century, there were many important inventors working as millwrights or mechanics who had typically received an elementary education and served an apprenticeship. Mechanics, instrument makers and surveyors had various mathematics training, james Watt was a surveyor and instrument maker and is described as being largely self-educated. Watt, like some other autodidacts of the time, became a Fellow of the Royal Society, academies also arose to provide scientific and technical training. Years of schooling in the United States began to increase sharply in the early 20th century and this phenomenon was seemingly related to increasing mechanization displacing child labor
Autodidact
–
Renaissance
polymath Leonardo da Vinci is one of history's best known autodidacts.
Autodidact
–
Tadao Ando is a famous autodidact architect of the 21st century.
35.
Applied physics
–
Applied physics is physics which is intended for a particular technological or practical use. It is usually considered as a bridge or a connection between physics and engineering and this approach is similar to that of applied mathematics. Applied physicists can also be interested in the use of physics for scientific research, for instance, the field of accelerator physics can contribute to research in theoretical physics by working with engineers enabling design and construction of high-energy colliders
Applied physics
–
Experiment using a
laser
Applied physics
–
A
magnetic resonance image
Applied physics
–
Computer modeling of the
space shuttle during re-entry
36.
Scanning electron microscope
–
A scanning electron microscope is a type of electron microscope that produces images of a sample by scanning it with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography. The electron beam is scanned in a raster scan pattern. SEM can achieve better than 1 nanometer. Specimens can be observed in vacuum, in low vacuum, in wet conditions. The most common SEM mode is detection of electrons emitted by atoms excited by the electron beam. The number of electrons that can be detected depends, among other things. By scanning the sample and collecting the electrons that are emitted using a special detector. An account of the history of SEM has been presented by McMullan. Ardenne applied the principle not only to achieve magnification but also to purposefully eliminate the chromatic aberration otherwise inherent in the electron microscope. He further discussed the various modes, possibilities and theory of SEM. The types of produced by an SEM include secondary electrons, reflected or back-scattered electrons, photons of characteristic X-rays and light, absorbed current. Secondary electron detectors are standard equipment in all SEMs, but it is rare that a machine would have detectors for all other possible signals. The signals result from interactions of the beam with atoms at various depths within the sample. In the most common or standard detection mode, ie secondary electron imaging or SEI, consequently, SEM can produce very high-resolution images of a sample surface, revealing details less than 1 nm in size. Back-scattered electrons are beam electrons that are reflected from the sample by elastic scattering and they emerge from deeper locations within the specimen and consequently the resolution of BSE images is generally poorer than SE images. BSE images can provide information about the distribution of different elements in the sample, characteristic X-rays are emitted when the electron beam removes an inner shell electron from the sample, causing a higher-energy electron to fill the shell and release energy. These characteristic X-rays are used to identify the composition and measure the abundance of elements in the sample, due to the very narrow electron beam, SEM micrographs have a large depth of field yielding a characteristic three-dimensional appearance useful for understanding the surface structure of a sample
Scanning electron microscope
–
These
pollen grains taken on an SEM show the characteristic
depth of field of SEM
micrographs.
Scanning electron microscope
–
M. von Ardenne's first SEM
Scanning electron microscope
–
SEM opened sample chamber
Scanning electron microscope
–
Analog type SEM
37.
Nuclear physics
–
Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions. Other forms of matter are also studied. Nuclear physics should not be confused with atomic physics, which studies the atom as a whole, discoveries in nuclear physics have led to applications in many fields. Such applications are studied in the field of nuclear engineering, Particle physics evolved out of nuclear physics and the two fields are typically taught in close association. Nuclear astrophysics, the application of physics to astrophysics, is crucial in explaining the inner workings of stars. The discovery of the electron by J. J. Thomson a year later was an indication that the atom had internal structure, in the years that followed, radioactivity was extensively investigated, notably by Marie and Pierre Curie as well as by Ernest Rutherford and his collaborators. By the turn of the physicists had also discovered three types of radiation emanating from atoms, which they named alpha, beta, and gamma radiation. Experiments by Otto Hahn in 1911 and by James Chadwick in 1914 discovered that the beta decay spectrum was continuous rather than discrete. That is, electrons were ejected from the atom with a range of energies, rather than the discrete amounts of energy that were observed in gamma. This was a problem for physics at the time, because it seemed to indicate that energy was not conserved in these decays. The 1903 Nobel Prize in Physics was awarded jointly to Becquerel for his discovery and to Marie, Rutherford was awarded the Nobel Prize in Chemistry in 1908 for his investigations into the disintegration of the elements and the chemistry of radioactive substances. In 1905 Albert Einstein formulated the idea of mass–energy equivalence, in 1906 Ernest Rutherford published Retardation of the α Particle from Radium in passing through matter. Hans Geiger expanded on this work in a communication to the Royal Society with experiments he and Rutherford had done, passing alpha particles through air, aluminum foil and gold leaf. More work was published in 1909 by Geiger and Ernest Marsden, in 1911–1912 Rutherford went before the Royal Society to explain the experiments and propound the new theory of the atomic nucleus as we now understand it. The plum pudding model had predicted that the particles should come out of the foil with their trajectories being at most slightly bent. But Rutherford instructed his team to look for something that shocked him to observe and he likened it to firing a bullet at tissue paper and having it bounce off. As an example, in this model consisted of a nucleus with 14 protons and 7 electrons. The Rutherford model worked well until studies of nuclear spin were carried out by Franco Rasetti at the California Institute of Technology in 1929
Nuclear physics
–
Nuclear physics
38.
Reichspostministerium
–
The Reichspostministerium in Berlin was the Ministry of Posts and Telecommunications of the German Weimar Republic from 1919 until 1933 as well as of Nazi Germany from 1933 to 1945. After World War I, the ministry succeeded the former Reichspost agency of the German Empire, in 1920 the Telegraphentechnische Reichsamt department for telegraphy was established, re-arranged as the Reichspostzentralamt research centre for telegraphy, telephony and radio electronics in 1928. On 1 January 1937, Department VIII of the former Reichspostzentralamt formed the core of the Forschungsanstalt der Deutschen Reichspost, from that date, the RPM subsumed all research and development departments in the areas of television engineering, high-frequency technology, cable transmission, metrology, and acoustics. The engineer Wilhelm Ohnesorge became the Postal Minister from February of that year, the RPM had its own 500, 000-square meter research site in Miersdorf near Zeuthen outside of Berlin. Dr. Friedrich Wilhelm Banneitz, an authority, was head of research. Dr. Friedrich Vilbig, an authority on high-frequency engineering, was his deputy, in 1942, the armed postal security service was subsumed into the Schutzstaffel, this was just one more step in the national socialization of the Deutsche Reichspost. In 1940, the RPM began construction of a cyclotron for von Ardenne, the author has been a group leader at the Institute of Technical Physics of the Russian Federal Nuclear Center in Snezhinsk
Reichspostministerium
–
Seat on
Leipziger Straße, Berlin
39.
Wilhelm Ohnesorge
–
Karl Wilhelm Ohnesorge was a German politician in the Third Reich who sat in the Hitler Cabinet. From 1937 to 1945, he acted as the minister and official of the Reichspost. Born in Gräfenhainichen, Saxony-Anhalt, Ohnesorge started working for the Imperial Post in 1890 and he later went on to study Physics in Kiel and Berlin, before he became the head of the postal service in the Imperial Headquarters during World War I. Ohnesorge first met Hitler sometime in 1920, and they became good friends, shortly after this, he joined the Nazi Party, founding its first branch outside Bavaria, at Dortmund. By the year 1929, he had become the president of the Central Office of the Reichspost, from 1937, he assumed the duties of Minister of the Reichspost, succeeding Paul Freiherr von Eltz-Rübenach. He is also known to have contributed heavily to research towards a German atomic bomb, despite his occupation as the minister of the German postal service and he presented many designs and diagrams of his ideas to Hitler himself, with whom he had developed a personal companionship. During the denazification after the war, as a member of the Party. However, for reasons, these charges were later revoked. Ohnesorge died at the age of 89 on 1 February 1962 in Munich, Wilhelm Ohnesorge, Die Deutsche Reichspost in Geschichte und Gegenwart. Wilhelm Ohnesorge This article is based on a translation of the article in the German Wikipedia
Wilhelm Ohnesorge
–
Wilhelm Ohnesorge, center, in civilian attire holding hat, 1937
40.
NKVD
–
The Peoples Commissariat for Internal Affairs, abbreviated NKVD, was a joint law enforcement agency of the whole Soviet Union that directly executed the will of the All-Union Communist Party. It was closely associated with the Soviet secret police, which at times was part of the agency, the NKVD was headed by Soviet secret police officials. The NKVD contained the regular, public police force of the USSR, including police, firefighting, border guards. It is best known for the activities of the Gulag and the Main Directorate for State Security and it was also tasked with protection of Soviet borders and espionage, influencing foreign governments and enforcing Stalinist policy within communist movements in other countries. After the Russian February Revolution of 1917, the Provisional Government dissolved the Tsars police, realizing that it was left with no capable security force, the Council of Peoples Commissars of the RSFSR created a secret political police, the Cheka, led by Felix Dzerzhinsky. It gained the right to undertake quick non-judicial trials and executions, the Cheka was reorganized in 1922 as the State Political Directorate, or GPU, of the NKVD of the RSFSR. In 1922, the USSR was formed with the RSFSR as its largest member, the GPU became the OGPU, under the Council of Peoples Commissars of the USSR. The NKVD of the RSFSR retained control of the militsiya, as a result, the NKVD also became responsible for all detention facilities as well as for the regular police. Since its creation in 1934, the NKVD of the USSR underwent many organizational changes, on February 3,1941, the Special Sections of the NKVD responsible for military counterintelligence became part of the Army and Navy. The GUGB was separated from the NKVD and renamed the Peoples Commissariat for State Security, after the German invasion, the NKVD and NKGB were reunited on July 20,1941. The CI sections were returned to the NKVD in January 1942, in April 1943, the CI sections were again transferred to the Peoples Commissariats of Defense and the Navy, becoming SMERSH, at the same time, the NKVD was again separated from the NKGB. In 1946, all Soviet Commissariats were renamed ministries, accordingly, the NKVD of the USSR was renamed as the Ministry of Internal Affairs, while the NKGB was renamed as the Ministry of State Security. In 1953, after the arrest of Lavrenty Beria, the MGB was merged back into the MVD, the police and security services were finally split in 1954 to become, The USSR Ministry of Internal Affairs, responsible for the criminal militia and correctional facilities. The USSR Committee for State Security, responsible for the police, intelligence, counter-intelligence, personal protection. In implementing Soviet internal policy towards perceived enemies of the Soviet state, untold multitudes of people were sent to GULAG camps, formally, most of these people were convicted by NKVD troikas – special courts martial. Evidential standards were low, a tip-off by an anonymous informer was considered sufficient grounds for arrest. Use of physical means of persuasion was sanctioned by a decree of the state. Hundreds of mass graves resulting from operations were later discovered throughout the country
NKVD
–
Genrikh Yagoda,
Vyacheslav Menzhinsky and
Felix Dzerzhinsky, 1924
NKVD
–
Picture of
Dzerzhinsky during a parade in 1936
NKVD
–
NKVD chief
Genrikh Yagoda (middle) inspecting the construction of the
Moscow-Volga canal, 1935
NKVD
–
Lavrentiy Beria with
Stalin (in background) and Stalin's daughter Svetlana
41.
Lev Artsimovich
–
Lev Andreevich Artsimovich was a Soviet physicist, academician of the Soviet Academy of Sciences, member of the Presidium of the Soviet Academy of Sciences, and Hero of Socialist Labor. Artsimovich worked on the field of fusion and plasma physics. From 1930 to 1944 he worked at the Ioffe Institute, from 1951 to his death in 1973, he was the head of the Soviet fusion power program. He was known as the father of the Tokamak, a concept for a fusion reactor. Once Artsimovich was asked when the first thermonuclear reactor would start its work and he replied, When mankind needs it, maybe a short time before that. Under his guidance a thermonuclear fusion reaction was produced in the laboratory for the first time, from 1963 to 1973 he was the vice-chairman of the Soviet Pugwash Committee and the chairman of the National Committee of Soviet Physicists. He was elected a Foreign Honorary Member of the American Academy of Arts, the crater Artsimovich on the Moon is named after him
Lev Artsimovich
–
Lev Artsimovich
42.
Georgy Flyorov
–
Georgy Nikolayevich Flyorov was a Soviet nuclear physicist who was known for the discovery of spontaneous fission. In 2012, element 114 flerovium was named after the laboratory at the Joint Institute for Nuclear Research bearing his name. Flyorov was born in Rostov-on-Don and attended the Leningrad Polytechnic Institute and majored in thermal physics, flyorovs urgings to build the uranium bomb without delay eventually led to the development of the Soviet atomic bomb project. He discovered spontaneous fission in 1940 with Konstantin Petrzhak and he also claimed as his discovery two transition metal elements, seaborgium and bohrium. He founded the Flyorov Laboratory of Nuclear Reactions, one of the labs of the Joint Institute for Nuclear Research in Dubna in 1957. Also during this period, he chaired the Scientific Council of the USSR Academy of Sciences
Georgy Flyorov
–
Georgy Flyorov on a 2013 Russian stamp
43.
Russian Alsos
–
This saved them a year by their own admission. Near the close and after the end of World War II in Europe, the Soviet Union, for example, the United States had Operation Paperclip and the Soviet Union had trophy brigades advancing with their military forces. In the area of technology, the U. S. had Operation Alsos. This was rectified with a decree in late 1944 and the formation of specialized exploitation teams in early 1945, however, the Soviet “Alsos” had broader objectives, which included wholesale relocation of scientific facilities to the Soviet Union. On 18 September 1944, a decree established a task force within the 9th Chief Directorate of the NKVD to support the work of German scientists invited to the Soviet Union. The head of the Directorate was Colonel General Avram Pavlovich Zavenyagin, on 23 March 1945, in Stalins office, Lavrentiy Beria suggested that specialized teams be sent to Germany to search for atomic technology and related personnel. The next day, he instructed Igor Vasilevich Kurchatov, head of Laboratory No,2, to submit requirements on the formation of the specialized search teams to be sent to Germany, Austria, and Czechoslovakia. Operational issues for the teams were assigned to SMERSH military counterintelligence,2, Lev Andreevich Artsimovich and Yulij Borisovich Khariton, were assigned to provide scientific guidance to the operation. While the entire staff at Laboratory No. 2, the only atomic laboratory at that time, numbered less than 100, the Battle of Berlin proved one of the last major engagements of World War II in Europe. With a great majority of German scientific facilities in Berlin and its suburbs, haste was necessary, as the American military forces were rapidly approaching Berlin. Soviet troops broke the Berlin defense-ring on 25 April 1945, georgij Nikolaevich Flerov had arrived earlier, although Kikoin did not recall a vanguard group. Targets on the top of their list included the Kaiser-Wilhelm Institut für Physik, the University of Berlin, the search teams occupied an entire building in Berlin-Friedrichshagen, which was large enough to also house German scientists recovered by the team. Unfortunately for the Soviet effort, the KWIP had mostly moved in 1943 and 1944 to Hechingen, on the edge of the Black Forest. This move and a little luck allowed the Americans to take into custody a number of German scientists associated with nuclear research. The only section of the institute which remained in Berlin was the physics section, headed by Ludwig Bewilogua. The pact was a pledge that whoever first made contact with the Russian people would speak for the rest, before the end of World War II, Thiessen, a member of the Nazi Party, nevertheless had Communist contacts. Ardenne’s institute was visited on 10 May by Colonel General Makhnjov, accompanied by Artsimovich, Flerov, Kikoin, at the end of the meeting, Makhnjov suggested that Ardenne continue his work in the Soviet Union
Russian Alsos
–
German scientists repatriated from
Sukhumi in February 1958.
44.
Electron microscope
–
An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. Transmission electron microscopes use electrostatic and electromagnetic lenses to control the electron beam and these electron optical lenses are analogous to the glass lenses of an optical light microscope. Industrially, electron microscopes are used for quality control and failure analysis. Modern electron microscopes produce electron micrographs using specialized digital cameras and frame grabbers to capture the image, the first electromagnetic lens was developed in 1926 by Hans Busch. According to Dennis Gabor, the physicist Leó Szilárd tried in 1928 to convince Busch to build an electron microscope, two years later, in 1933, Ruska built an electron microscope that exceeded the resolution attainable with an optical microscope. Moreover, Reinhold Rudenberg, the director of Siemens-Schuckertwerke, obtained the patent for the electron microscope in May 1931. In 1932, Ernst Lubcke of Siemens & Halske built and obtained images from an electron microscope. Five years later, the firm financed the work of Ernst Ruska and Bodo von Borries, also in 1937, Manfred von Ardenne pioneered the scanning electron microscope. The first commercial electron microscope was produced in 1938 by Siemens, although contemporary transmission electron microscopes are capable of two million-power magnification, as scientific instruments, they remain based upon Ruska’s prototype. The original form of electron microscope, the electron microscope uses a high voltage electron beam to illuminate the specimen. The electron beam is produced by a gun, commonly fitted with a tungsten filament cathode as the electron source. When it emerges from the specimen, the electron beam carries information about the structure of the specimen that is magnified by the lens system of the microscope. The image detected by the camera may be displayed on a monitor or computer. The resolution of TEMs is limited primarily by spherical aberration, but a new generation of aberration correctors have been able to partially overcome spherical aberration to increase resolution. The ability to determine the positions of atoms within materials has made the HRTEM an important tool for nano-technologies research, transmission electron microscopes are often used in electron diffraction mode. The major disadvantage of the electron microscope is the need for extremely thin sections of the specimens. Biological specimens are required to be chemically fixed, dehydrated and embedded in a polymer resin to stabilize them sufficiently to allow ultrathin sectioning. Sections of biological specimens, organic polymers and similar materials may require treatment with heavy atom labels in order to achieve the required image contrast
Electron microscope
–
A 1973
Siemens electron microscope,
Musée des Arts et Métiers,
Paris
Electron microscope
–
Diagram of a transmission electron microscope
Electron microscope
–
Electron microscope constructed by
Ernst Ruska in 1933
Electron microscope
–
RCA Model EMT3 Desktop electron microscope, 1950
45.
Cyclotron
–
A cyclotron is a type of particle accelerator invented by Ernest O. Lawrence in 1934 in which charged particles accelerate outwards from the centre along a spiral path. The particles are held to a spiral trajectory by a magnetic field. Lawrence was awarded the 1939 Nobel prize in physics for this invention, the largest single-magnet cyclotron was the 4.67 m synchrocyclotron built between 1940 and 1946 by Lawrence at the University of California at Berkeley, which could accelerate protons to 730 MeV. The largest cyclotron is the 17.1 m multimagnet TRIUMF accelerator at the University of British Columbia in Vancouver, there are over 1200 cyclotrons used in nuclear medicine worldwide for the production of radionuclides. The cyclotron was conceived in Germany in the 1920s, at Aachen University in 1926, the cyclotron was proposed by a co-student of Rolf Widerøe, who rejected the idea as too complicated to construct. In 1927, Max Steenbeck developed the concept of the cyclotron at Siemens, the first cyclotron patent was filed by Hungarian physicist Leo Szilard in 1929, while working at Humboldt University of Berlin. The cyclotron was developed and patented by Ernest Lawrence of the University of California, Berkeley. Lawrence went on to make a working cyclotron using large electromagnets from Poulsen arc radio transmitters provided by the Federal Telegraph Company. A graduate student, M. Stanley Livingston, did much of the work of translating the idea into working hardware, Lawrence read an article about the concept of a drift tube linac by Rolf Widerøe, who had also been working along similar lines with the betatron concept. He also developed a 467 cm synchrocyclotron, the first European cyclotron was constructed in Leningrad in the physics department of the Radium Institute, headed by Vitaly Khlopin. This Leningrad instrument was first proposed in 1932 by George Gamow and Lev Mysovskii and was installed, in Nazi Germany a cyclotron was built in Heidelberg under supervision of Walther Bothe and Wolfgang Gentner, with support from the Heereswaffenamt, and became operative in 1943. A cyclotron accelerates a charged particle beam using a high alternating voltage which is applied between two hollow D-shaped sheet metal electrodes called dees inside a vacuum chamber. The dees are placed face to face with a gap between them, creating a cylindrical space within them for the particles to move. The particles are injected into the center of this space, the dees are located between the poles of a large electromagnet which applies a static magnetic field B perpendicular to the electrode plane. The magnetic field causes the path to bend in a circle due to the Lorentz force perpendicular to their direction of motion. If the particles speed were constant, they would travel in a path within the dees under the influence of the magnetic field. However a radio frequency alternating voltage of several thousand volts is applied between the dees, the frequency is set so that the particles make one circuit during a single cycle of the voltage. Each time after the pass to the other dee electrode the polarity of the RF voltage reverses
Cyclotron
Cyclotron
–
A modern cyclotron used for
radiation therapy. The magnet is painted yellow.
Cyclotron
–
Vacuum chamber of Lawrence 69 cm (27 in) 1932 cyclotron with cover removed, showing the dees. The 13,000 V RF accelerating potential at about 27 MHz is applied to the dees by the two feedlines visible at top right. The beam emerges from the dees and strikes the target in the chamber at bottom.
Cyclotron
–
A French cyclotron, produced in
Zurich,
Switzerland in 1937. The vacuum chamber containing the dees (at left) has been removed from the magnet (red, at right)
46.
Berlin Radio Show
–
The IFA or Internationale Funkausstellung Berlin is one of the oldest industrial exhibitions in Germany. Between 1924 and 1939 it was an event, but as from 1950 it was organized on a two yearly basis until 2005. Since then it has become an event again, held in September. Today it is one of leading trade shows for consumer electronics. It offers the opportunity to exhibitors to present their latest products and developments to the general public, as a result of daily reporting in almost all the German media, the radio exhibition achieves a large spreading of the information – and advertising messages and has also become international. In the course of its history, a number of world innovations were first seen at the exhibition. As of 2015 IFA is “Europe’s biggest tech show”,245,000 visitors and 1,645 exhibitors attended IFA2015. German physicist and inventor Manfred von Ardenne gave a demonstration of a television system using a cathode ray tube for both transmission and reception, at the 1931 show. In 1933 The Volksempfänger, a Nazi-sponsored radio receiver design, was introduced, ordered by Dr. Joseph Goebbels, designed by Otto Griessing, sold by Gustav Seibt, it was presented at the tenth Berliner Funkausstellung on 18 August 1933, its price fixed at 76 Reichsmark. 100,000 units were sold during the exhibition, in 1938 the DKE38 followed, the price fixed at 35 RM. AEG, founded in 1883 by Emil Rathenau, showed the first practical tape recorder. In 1939 the exhibition was called Grosse Deutsche Funk- und Fernseh-Ausstellung, the Einheits-Fernseh-Empfänger E1, a TV set designed to be affordable for everybody, was introduced. The physical display size was 7.68 ×8.86, plans for large-scale manufacture were thwarted by the outbreak of World War II. Color TV was also introduced, based on an invention by Werner Flechsig, multinational Dutch electronics corporation Philips introduced the compact audio cassette medium for audio storage and the first cassette recorder, developed by ir. Lou Ottens and his team at the Philips factory in Hasselt, at the 1963 show, IFA official website Highlights of past exhibitions from 1926 to 2005
Berlin Radio Show
–
IFA, 2010
Berlin Radio Show
–
Goebbels with a
VE 301 W
Berlin Radio Show
–
Main entrance and opening of exhibition in 1924
Berlin Radio Show
–
Presentation of a big speaker in 1929
47.
Cathode ray tube
–
The cathode ray tube is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam onto the screen to create the images, the images may represent electrical waveforms, pictures, radar targets, or others. CRTs have also used as memory devices, in which case the visible light emitted from the fluorescent material is not intended to have significant meaning to a visual observer. In television sets and computer monitors, the front area of the tube is scanned repetitively and systematically in a fixed pattern called a raster. An image is produced by controlling the intensity of each of the three beams, one for each additive primary color with a video signal as a reference. A CRT is constructed from an envelope which is large, deep, fairly heavy. The interior of a CRT is evacuated to approximately 0.01 Pa to 133 nPa. evacuation being necessary to facilitate the flight of electrons from the gun to the tubes face. That it is evacuated makes handling an intact CRT potentially dangerous due to the risk of breaking the tube and causing a violent implosion that can hurl shards of glass at great velocity. As a matter of safety, the face is made of thick lead glass so as to be highly shatter-resistant and to block most X-ray emissions. Flat panel displays can also be made in large sizes, whereas 38 to 40 was about the largest size of a CRT television, flat panels are available in 60. Cathode rays were discovered by Johann Hittorf in 1869 in primitive Crookes tubes and he observed that some unknown rays were emitted from the cathode which could cast shadows on the glowing wall of the tube, indicating the rays were traveling in straight lines. In 1890, Arthur Schuster demonstrated cathode rays could be deflected by electric fields, the earliest version of the CRT was known as the Braun tube, invented by the German physicist Ferdinand Braun in 1897. It was a diode, a modification of the Crookes tube with a phosphor-coated screen. In 1907, Russian scientist Boris Rosing used a CRT in the end of an experimental video signal to form a picture. He managed to display simple geometric shapes onto the screen, which marked the first time that CRT technology was used for what is now known as television. The first cathode ray tube to use a hot cathode was developed by John B. Johnson and Harry Weiner Weinhart of Western Electric and it was named by inventor Vladimir K. Zworykin in 1929. RCA was granted a trademark for the term in 1932, it released the term to the public domain in 1950. The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934, in oscilloscope CRTs, electrostatic deflection is used, rather than the magnetic deflection commonly used with television and other large CRTs
Cathode ray tube
–
A 14 inch cathode ray tube showing its deflection coils and electron guns
Cathode ray tube
–
Cutaway rendering of a color CRT: 1. Three electron guns (for red, green, and blue phosphor dots) 2. Electron beams 3. Focusing coils 4. Deflection coils 5. Anode connection 6. Mask for separating beams for red, green, and blue part of displayed image 7. Phosphor layer with red, green, and blue zones 8. Close-up of the phosphor-coated inner side of the screen
Cathode ray tube
–
Typical 1950s United States television set
Cathode ray tube
–
A flat CRT assembly inside a 1984 Sinclair FTV1 pocket TV
48.
Flying-spot scanner
–
A flying-spot scanner uses a scanning source of a spot of light, such as a high-resolution, high-light-output, low-persistence cathode ray tube, to scan an image. Usually the image to be scanned is on film, such as motion picture film. The output of the scanner is usually a television signal, in the case of the CRT-based scanner, as an electron beam is drawn across the face of the CRT it creates a scan that has the correct number of lines and aspect ratio for the format of the signal. The image of this scan is focused with a lens onto the film frame, telecines that use a monochrome CRT as the light source can be referred to as flying-spot scanners. Historically, flying-spot scanners were used as primitive live-action studio cameras at the dawn of electronic television. A projector equipped with a spinning perforated Nipkow disc created the spot that scanned the stage, flying-spot scanner technology was later implemented by DuMont Laboratories in the Vitascan color television system, released in 1956. The light from the CRT camera was picked up by special scoops housing 4 photomultiplier tubes. Frank Gray History of television Electronic Video Recording Science Newsletter, April 16,1927 How New Television Process Works with Grays flying-spot scanner innovation
Flying-spot scanner
–
The parts of a flying spot scanner: (A)
Cathode-ray tube (CRT); (B) photon beam; (C) & (D) dichroic mirrors; (E), (F) & (G) red-, green- and blue-sensitive photomultipliers.
49.
1936 Summer Olympic Games
–
The 1936 Summer Olympics, officially known as the Games of the XI Olympiad, was an international multi-sport event that was held in 1936 in Berlin, Germany. Berlin won the bid to host the Games over Barcelona, Spain, on 26 April 1931 and it marked the second and final time the International Olympic Committee gathered to vote in a city that was bidding to host those Games. To outdo the Los Angeles games of 1932, Adolf Hitler had built a new 100, 000-seat track and field stadium, six gymnasiums, the games were the first to be televised, and radio broadcasts reached 41 countries. Filmmaker Leni Riefenstahl was commissioned by the German Olympic Committee to film the Games for $7 million and her film, titled Olympia, pioneered many of the techniques now common in the filming of sports. When threatened with a boycott of the Games by other nations, total ticket revenues were 7.5 million Reichsmark, generating a profit of over one million marks. The official budget did not include outlays by the city of Berlin or outlays of the German national government and these were the final Olympics under the presidency of Henri de Baillet-Latour and the final Olympic Games for 12 years because of World War II. The next Olympic Games would be held in 1948, the bidding for these Olympic Games was the first to be contested by IOC members casting votes for their own favorite host cities. The vote occurred in 1931, during the Weimar Republic, before Adolf Hitler, many other cities around the world also wanted to host the Summer Olympics for that year, but except for Barcelona they did not receive any IOC votes. The other cities competing to hold the games were Alexandria, Buenos Aires, Cologne, Dublin, Frankfurt, Helsinki, Lausanne, Nuremberg, Rio de Janeiro, Budapest, and Rome. The selection procedure marked the second and final time that the International Olympic Committee would gather to vote in a city which was bidding to host those Games, the only other time this occurred was at the inaugural IOC Session in Paris, France, on 24 April 1894. Then, Athens and Paris were chosen to host the 1896 and 1900 Games, after the Nazis took control and began instituting anti-Semitic policies, the IOC held private discussions among its delegates about changing the decision to hold the Games in Berlin. However, Hitlers regime gave assurances that Jewish athletes would be allowed to compete on a German Olympic team, in September 1934, the US Olympic committee publicly accepted the invitation to go to the Berlin games, halting any further IOC attempts to quietly revise the decision. The next scheduled games in 1940 were awarded to Tokyo, the Japanese military even demanded that venues should be built from wood because metal was needed for its wars in Manchuria. The Olympic torch relay – itself pioneered as part of the 1936 Summer Games – was to fly the Olympic flame from Olympia to Tokyo in a specially-designed long-range aircraft. In 1938 the Japanese rejected hosting the games because they saw the Olympics and he promoted the idea that the use of sports would harden the German spirit and instill unity among German youth. At the same time he believed that sports was a way to weed out the weak, Jewish. Among Diems ideas for the Berlin Games was the introduction of the Olympic torch relay between Greece and the host nation, the 1936 Summer Olympics torch relay was the first of its kind, following on from the reintroduction of the Olympic Flame at the 1928 Games. It pioneered the modern convention of moving the flame via a system from Greece to the Olympic venue
1936 Summer Olympic Games
–
Games of the XI Olympiad
1936 Summer Olympic Games
–
The
Olympic Flag flying over the Olympic Stadium, Berlin 1936
1936 Summer Olympic Games
–
Runners carrying the Olympic Flame.
1936 Summer Olympic Games
–
TV camera from Telefunken.
50.
Gustav Hertz
–
Gustav Ludwig Hertz was a German experimental physicist and Nobel Prize winner, and a nephew of Heinrich Rudolf Hertz. Hertz was born in Hamburg, the son of Auguste and a lawyer, Gustav Theodor Hertz and he attended the Gelehrtenschule des Johanneums before studying at the Georg-August University of Göttingen, the Ludwig Maximilians University of Munich, and the Humboldt University of Berlin. He received his doctorate in 1911 under Heinrich Leopold Rubens, from 1911 to 1914, Hertz was an assistant to Rubens at the University of Berlin. During World War I, Hertz served in the military from 1914 and he was seriously wounded in 1915. In 1917, he returned to the University of Berlin as a Privatdozent, in 1920, he took a job as a research physicist at the Philips Incandescent Lamp Factory in Eindhoven, which he held until 1925. In 1925, Hertz became ordinarius professor and director of the Physics Institute of the Martin Luther University of Halle-Wittenberg, in 1928 he became ordinarius professor of experimental physics and director of the Physics Institute of the Technische Hochschule Berlin, now Technical University of Berlin. While there, he developed an isotope separation technique via gaseous diffusion and he then took a position at Siemens, as director of Research Laboratory II. While there, he continued his work on physics and ultrasound. He held this position until he departed for the Soviet Union in 1945, Hertz was concerned for his safety and, like his fellow Nobel laureate Franck, was looking to move to the USA or any other place outside Germany. The pact was a pledge that whoever first made contact with the Russians would speak for the rest, before the end of World War II, Thiessen, a member of the Nazi Party, had Communist contacts. On 27 April 1945, Thiessen arrived at von Ardennes institute in a vehicle with a major of the Soviet Army. All four of the members were taken to the Soviet Union. Hertz was made head of Institute G, in Agudseri, about 10 km southeast of Sukhumi, other members of Institute G were Werner Hartmann and Karl-Franz Zühlke. By the end of the 1940s, nearly 300 Germans were working at the institute, Institute A was used as the basis for the Sukhumi Physical-Technical Institute in Sinop, a suburb of Sukhumi. Volmer went to the Scientific Research Institute No.9. in Moscow, in Institute A, Thiessen became leader for developing techniques for manufacturing porous barriers for isotope separation. In 1949, six German scientists, including Hertz, Thiessen, and Barwich were called in for consultation at Sverdlovsk-44, the plant, smaller than the American Oak Ridge gaseous diffusion plant, was getting only a little over half of the expected 90% or higher enrichment. After 1950, Hertz moved to Moscow, in 1951, Hertz was awarded a Stalin Prize, second class, with Barwich. In that year, James Franck and Hertz were jointly awarded the Max Planck Medal by the Deutsche Physikalische Gesellschaft, Hertz remained in the Soviet Union until 1955
Gustav Hertz
–
Hertz in 1925
Gustav Hertz
–
Stamp Issued by
DDR commemorating Gustav Ludwig Hertz.
