Potsdam is the capital and largest city of the German federal state of Brandenburg. It directly borders the German capital, is part of the Berlin/Brandenburg Metropolitan Region, it is situated on the River Havel 24 kilometres southwest of Berlin's city centre. Potsdam was a residence of the Prussian kings and the German Kaiser until 1918, its planning embodied ideas of the Age of Enlightenment: through a careful balance of architecture and landscape, Potsdam was intended as "a picturesque, pastoral dream" which would remind its residents of their relationship with nature and reason. Around the city there are a series of interconnected lakes and cultural landmarks, in particular the parks and palaces of Sanssouci, the largest World Heritage Site in Germany; the Potsdam Conference in 1945 was held at the palace Cecilienhof. Babelsberg, in the south-eastern part of Potsdam, was a major film production studio before the 1930s and has enjoyed success as a major center of European film production since the fall of the Berlin Wall.
The Filmstudio Babelsberg is the oldest large-scale film studio in the world. Potsdam developed into a centre of science in Germany in the 19th century. Today, there are three public colleges, the University of Potsdam, more than 30 research institutes in the city; the area was formed from a series of large moraines left after the last glacial period. Today, the city is three-quarters green space, with just a quarter as urban area. There are about 20 lakes and rivers in and around Potsdam, such as the Havel, the Griebnitzsee, Templiner See, Tiefer See, Teltowkanal, Heiliger See and the Sacrower See; the highest point is the 114-metre high Kleiner Ravensberg. Potsdam is divided into seven historic city Bezirke and nine new Stadtteile, which joined the city in 2003; the appearance of the city quarters is quite different. Those in the north and in the centre consist of historical buildings, the south of the city is dominated by larger areas of newer buildings; the city of Potsdam is divided into 34 Stadtteile, which are divided further into 84 statistical Bezirke.
Today one distinguishes between the older parts of the city - these are the city center, the western and northern suburbs, Bornstedt, Potsdam South, Drewitz and Kirchsteigfeld - and those communities incorporated after 1990 which have since 2003 become Stadtteile - these are Eiche, Golm, Groß Glienicke, Marquardt, Neu Fahrland and Uetz-Paaren. The new Stadtteile are located in the north of the city. For the history of all incorporations, see the relevant section on incorporation and spin-offs. Structure with statistical numbering: Officially the climate is oceanic - more degraded by being far from the coast and to the east, but using the 1961-1990 normal and the 0 °C isotherm the city has a humid continental climate, which shows a slight influence of the continent different from the climates predominantly influenced by the Atlantic Ocean. Low averages below freezing for all winter causing snows that are frequent and winters are cold, but not as stringent as inland locations or with greater influence from the same.
Summer is relatively warm with temperatures between 23 to 24 ° C, the heat waves being influenced by the UHI of Potsdam. The average winter high temperature is 3.5 °C, with a low of −1.7 °C. Snow is common in the winter. Spring and autumn are short. Summers are mild, with a high of 23.6 °C and a low of 12.7 °C. The name "Potsdam" seems to have been Poztupimi. A common theory is that it derives from an old West Slavonic term meaning "beneath the oaks", i.e. the corrupted pod dubmi/dubimi. However some question this explanation; the area around Potsdam shows signs of occupancy since the Bronze Age and was part of Magna Germania as described by Tacitus. After the great migrations of the Germanic peoples, Slavs moved in and Potsdam was founded after the 7th century as a settlement of the Hevelli tribe centred on a castle, it was first mentioned in a document in 993 as Poztupimi, when Emperor Otto III gifted the territory to the Quedlinburg Abbey led by his aunt Matilda. By 1317, it was mentioned as a small town.
It gained its town charter in 1345. In 1573, it was still a small market town of 2,000 inhabitants. Potsdam lost nearly half of its population due to the Thirty Years' War. A continuous Hohenzollern possession since 1415, Potsdam became prominent, when it was chosen in 1660 as the hunting residence of Frederick William I, Elector of Brandenburg, the core of the powerful state that became the Kingdom of Prussia, it housed Prussian barracks. After the Edict of Potsdam in 1685, Potsdam became a centre of European immigration, its religious freedom attracted people from France, the Netherlands and Bohemia. The edict accelerated economic recovery; the city became a full residence of the Prussian royal family. The buildings of the royal residences were built during the reign of Frederick the Great. One of these is the Sanssouci Palace, famed for Rococo interiors. Other royal residences include the Orangery. In 1815, at the formation of the Province of Brandenburg, Potsdam became the provincial capital until 1918, except for a period between 1827 and 1843 when Berlin was the provincial capital.
The province comprised two governorates named after their capitals Potsdam and Frankfurt (O
Geodesy, is the Earth science of measuring and understanding Earth's geometric shape, orientation in space, gravitational field. The field incorporates studies of how these properties change over time and equivalent measurements for other planets. Geodynamical phenomena include crustal motion and polar motion, which can be studied by designing global and national control networks, applying space and terrestrial techniques, relying on datums and coordinate systems; the word "geodesy" comes from the Ancient Greek word γεωδαισία geodaisia. It is concerned with positioning within the temporally varying gravity field. Geodesy in the German-speaking world is divided into "higher geodesy", concerned with measuring Earth on the global scale, "practical geodesy" or "engineering geodesy", concerned with measuring specific parts or regions of Earth, which includes surveying; such geodetic operations are applied to other astronomical bodies in the solar system. It is the science of measuring and understanding Earth's geometric shape, orientation in space, gravity field.
To a large extent, the shape of Earth is the result of rotation, which causes its equatorial bulge, the competition of geological processes such as the collision of plates and of volcanism, resisted by Earth's gravity field. This applies to the liquid surface and Earth's atmosphere. For this reason, the study of Earth's gravity field is called physical geodesy; the geoid is the figure of Earth abstracted from its topographical features. It is an idealized equilibrium surface of sea water, the mean sea level surface in the absence of currents and air pressure variations, continued under the continental masses; the geoid, unlike the reference ellipsoid, is irregular and too complicated to serve as the computational surface on which to solve geometrical problems like point positioning. The geometrical separation between the geoid and the reference ellipsoid is called the geoidal undulation, it varies globally between ± 110 m. A reference ellipsoid, customarily chosen to be the same size as the geoid, is described by its semi-major axis a and flattening f.
The quantity f = a − b/a, where b is the semi-minor axis, is a purely geometrical one. The mechanical ellipticity of Earth can be determined to high precision by observation of satellite orbit perturbations, its relationship with the geometrical flattening is indirect. The relationship depends on the internal density distribution, or, in simplest terms, the degree of central concentration of mass; the 1980 Geodetic Reference System posited a 1:298.257 flattening. This system was adopted at the XVII General Assembly of the International Union of Geodesy and Geophysics, it is the basis for geodetic positioning by the Global Positioning System and is thus in widespread use outside the geodetic community. The numerous systems that countries have used to create maps and charts are becoming obsolete as countries move to global, geocentric reference systems using the GRS 80 reference ellipsoid; the geoid is "realizable", meaning it can be located on Earth by suitable simple measurements from physical objects like a tide gauge.
The geoid can, therefore, be considered a real surface. The reference ellipsoid, has many possible instantiations and is not realizable, therefore it is an abstract surface; the third primary surface of geodetic interest—the topographic surface of Earth—is a realizable surface. The locations of points in three-dimensional space are most conveniently described by three cartesian or rectangular coordinates, X, Y and Z. Since the advent of satellite positioning, such coordinate systems are geocentric: the Z-axis is aligned with Earth's rotation axis. Prior to the era of satellite geodesy, the coordinate systems associated with a geodetic datum attempted to be geocentric, but their origins differed from the geocenter by hundreds of meters, due to regional deviations in the direction of the plumbline; these regional geodetic data, such as ED 50 or NAD 27 have ellipsoids associated with them that are regional "best fits" to the geoids within their areas of validity, minimizing the deflections of the vertical over these areas.
It is only because GPS satellites orbit about the geocenter, that this point becomes the origin of a coordinate system defined by satellite geodetic means, as the satellite positions in space are themselves computed in such a system. Geocentric coordinate systems used in geodesy can be divided into two classes: Inertial reference systems, where the coordinate axes retain their orientation relative to the fixed stars, or equivalently, to the rotation axes of ideal gyroscopes; the X-axis lies within the Greenwich observatory's meridian plane. The coordinate transformation between these two systems is described to good approximation by sidereal time, which takes into account variations in Earth's axial rotation. A more accurate description takes polar motion into account, a phenomenon monitored by geodesists. In surveying and mapping, important fields of application of geodesy, two general types of coordinate systems are used in the plane
Leipzig University, in Leipzig in the Free State of Saxony, Germany, is one of the world's oldest universities and the second-oldest university in Germany. The university was founded on December 2, 1409 by Frederick I, Elector of Saxony and his brother William II, Margrave of Meissen, comprised the four scholastic faculties. Since its inception, the university has engaged in teaching and research for over 600 years without interruption. Famous alumni include Leibniz, Leopold von Ranke, Friedrich Nietzsche, Robert Schumann, Richard Wagner, Tycho Brahe, Georgius Agricola, Angela Merkel and the nine Nobel laureates associated with the university; the university was modelled on the University of Prague, from which the German-speaking faculty members withdrew to Leipzig after the Jan Hus crisis and the Decree of Kutná Hora. The Alma mater Lipsiensis opened in 1409, after it had been endorsed by Pope Alexander V in his Bull of Acknowledgment on, its first rector was Johann von Münsterberg. From its foundation, the Paulinerkirche served as the university church.
After the Reformation, the church and the monastery buildings were donated to the university in 1544. In order to secure independent and sustainable funding, the university was endowed with the lordship over 9 villages east of Leipzig, it kept this status for nearly 400 years. As many European universities, the university of Leipzig was structured into colleges responsible for organising accommodation and collegiate lecturing. Among the colleges of Leipzig were the Small College, the Large College, the Red College, the College of our Lady and the Pauliner-College. There were private residential halls; the colleges had jurisdiction over their members. The college structure was abandoned and today only the names survive. During the first centuries, the university grew and was a rather regional institution; this changed, during the 19th century when the university became a world-class institution of higher education and research. At the end of the 19th century, important scholars such as Bernhard Windscheid and Wilhelm Ostwald taught at Leipzig.
Leipzig University was one of the first German universities to allow women to register as "guest students". At its general assembly in 1873, the Allgemeiner Deutscher Frauenverein thanked the University of Leipzig and Prague for allowing women to attend as guest students; this was the year that the first woman in Germany obtained Johanna von Evreinov. Until the beginning of the Second World War, Leipzig University attracted a number of renowned scholars and Nobel Prize laureates, including Paul Ehrlich, Felix Bloch, Werner Heisenberg and Sin-Itiro Tomonaga. Many of the university's alumni became important scientists. Under Nazi rule many Jews' degrees were cancelled. Noteworthy Nazis, such as Max Clara taught at the university and were appointed to positions with great authority; the university was kept open throughout World War II after the destruction of its buildings. During the war the acting rector, Erich Maschke, described the continuation of the university in a memo on May 11, 1945, announcing the vote for a new rector: Since 4 December 1943 a fixed determination not to abandon the Leipzig University in the most difficult hour of its more than five-hundred-year history has bonded the professors with each other and with the students.
The special task of repairing the damage caused by air attacks has now broadened out to the more general duty to save the continuity of our university and preserve its substance, at the least its indestructible kernel, through the crisis that has now reached its fullest stage. After the destruction of most of the buildings and the majority of its libraries, this kernel is represented by the professoriate alone; this is. By the end of the war 60 per cent of the university's buildings and 70 per cent of its books had been destroyed; the university reopened after the war on February 5, 1946, but it was affected by the uniformity imposed on social institutions in the Soviet occupation zone. In 1948 the elected student council was disbanded and replaced by Free German Youth members; the chairman of the Student Council, Wolfgang Natonek, other members were arrested and imprisoned, but the university was a nucleus of resistance. Thus began the Belter group, with flyers for free elections; the head of the group, Herbert Belter, was executed in 1951 in Moscow.
The German Democratic Republic was created in 1949, in 1953 for Karl Marx Year the University was renamed by its government the Karl Marx University, Leipzig after Karl Marx. In 1968, the damaged Augusteum, including Johanneum and Albertinum and the intact Paulinerkirche, were demolished to make way for a redevelopment of the university, carried out between 1973 and 1978; the dominant building of the university was the University Tower, built between 1968 and 1972 in the form of an open book. In 1991, following the reunification of Germany, the University's name was restored to the original Leipzig University; the reconstruction of the University Library, damaged during the war and in the GDR secured, was completed in 2002. With the delivery of the University Tower to a private user, the university was forced to spread some faculties
National Library of the Czech Republic
The National Library of the Czech Republic is the central library of the Czech Republic. It is directed by the Ministry of Culture; the library's main building is located in the historical Clementinum building in Prague, where half of its books are kept. The other half of the collection is stored in the district of Hostivař; the National Library is the biggest library in the Czech Republic, in its funds there are around 6 million documents. The library has around 60,000 registered readers; as well as Czech texts, the library stores older material from Turkey and India. The library houses books for Charles University in Prague; the library won international recognition in 2005 as it received the inaugural Jikji Prize from UNESCO via the Memory of the World Programme for its efforts in digitising old texts. The project, which commenced in 1992, involved the digitisation of 1,700 documents in its first 13 years; the most precious medieval manuscripts preserved in the National Library are the Codex Vyssegradensis and the Passional of Abbes Kunigunde.
In 2006 the Czech parliament approved funding for the construction of a new library building on Letna plain, between Hradčanská metro station and Sparta Prague's football ground, Letná stadium. In March 2007, following a request for tender, Czech architect Jan Kaplický was selected by a jury to undertake the project, with a projected completion date of 2011. In 2007 the project was delayed following objections regarding its proposed location from government officials including Prague Mayor Pavel Bém and President Václav Klaus. Plans for the building had still not been decided in February 2008, with the matter being referred to the Office for the Protection of Competition in order to determine if the tender had been won fairly. In 2008, Minister of Culture Václav Jehlička announced the end of the project, following a ruling from the European Commission that the tender process had not been carried out legally; the library was affected by the 2002 European floods, with some documents moved to upper levels to avoid the excess water.
Over 4,000 books were removed from the library in July 2011 following flooding in parts of the main building. There was a fire at the library in December 2012. List of national and state libraries Official website
Système universitaire de documentation
The système universitaire de documentation or SUDOC is a system used by the libraries of French universities and higher education establishments to identify and manage the documents in their possession. The catalog, which contains more than 10 million references, allows students and researcher to search for bibliographical and location information in over 3,400 documentation centers, it is maintained by the Bibliographic Agency for Higher Education. Official website
International Astronomical Union
The International Astronomical Union is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy. Among other activities, it acts as the internationally recognized authority for assigning designations and names to celestial bodies and any surface features on them; the IAU is a member of the International Council for Science. Its main objective is to promote and safeguard the science of astronomy in all its aspects through international cooperation; the IAU maintains friendly relations with organizations that include amateur astronomers in their membership. The IAU has its head office on the second floor of the Institut d'Astrophysique de Paris in the 14th arrondissement of Paris. Working groups include the Working Group for Planetary System Nomenclature, which maintains the astronomical naming conventions and planetary nomenclature for planetary bodies, the Working Group on Star Names, which catalogs and standardizes proper names for stars.
The IAU is responsible for the system of astronomical telegrams which are produced and distributed on its behalf by the Central Bureau for Astronomical Telegrams. The Minor Planet Center operates under the IAU, is a "clearinghouse" for all non-planetary or non-moon bodies in the Solar System; the Working Group for Meteor Shower Nomenclature and the Meteor Data Center coordinate the nomenclature of meteor showers. The IAU was founded on 28 July 1919, at the Constitutive Assembly of the International Research Council held in Brussels, Belgium. Two subsidiaries of the IAU were created at this assembly: the International Time Commission seated at the International Time Bureau in Paris and the International Central Bureau of Astronomical Telegrams seated in Copenhagen, Denmark; the 7 initial member states were Belgium, France, Great Britain, Greece and the United States, soon to be followed by Italy and Mexico. The first executive committee consisted of Benjamin Baillaud, Alfred Fowler, four vice presidents: William Campbell, Frank Dyson, Georges Lecointe, Annibale Riccò.
Thirty-two Commissions were appointed at the Brussels meeting and focused on topics ranging from relativity to minor planets. The reports of these 32 Commissions formed the main substance of the first General Assembly, which took place in Rome, Italy, 2–10 May 1922. By the end of the first General Assembly, ten additional nations had joined the Union, bringing the total membership to 19 countries. Although the Union was formed eight months after the end of World War I, international collaboration in astronomy had been strong in the pre-war era; the first 50 years of the Union's history are well documented. Subsequent history is recorded in the form of reminiscences of past IAU Presidents and General Secretaries. Twelve of the fourteen past General Secretaries in the period 1964-2006 contributed their recollections of the Union's history in IAU Information Bulletin No. 100. Six past IAU Presidents in the period 1976–2003 contributed their recollections in IAU Information Bulletin No. 104. The IAU includes a total of 12,664 individual members who are professional astronomers from 96 countries worldwide.
83% of all individual members are male, while 17% are female, among them the union's former president, Mexican astronomer Silvia Torres-Peimbert. Membership includes 79 national members, professional astronomical communities representing their country's affiliation with the IAU. National members include the Australian Academy of Science, the Chinese Astronomical Society, the French Academy of Sciences, the Indian National Science Academy, the National Academies, the National Research Foundation of South Africa, the National Scientific and Technical Research Council, KACST, the Council of German Observatories, the Royal Astronomical Society, the Royal Astronomical Society of New Zealand, the Royal Swedish Academy of Sciences, the Russian Academy of Sciences, the Science Council of Japan, among many others; the sovereign body of the IAU is its General Assembly. The Assembly determines IAU policy, approves the Statutes and By-Laws of the Union and elects various committees; the right to vote on matters brought before the Assembly varies according to the type of business under discussion.
The Statutes consider such business to be divided into two categories: issues of a "primarily scientific nature", upon which voting is restricted to individual members, all other matters, upon which voting is restricted to the representatives of national members. On budget matters, votes are weighted according to the relative subscription levels of the national members. A second category vote requires a turnout of at least two-thirds of national members in order to be valid. An absolute majority is sufficient for approval in any vote, except for Statute revision which requires a two-thirds majority. An equality of votes is resolved by the vote of the President of the Union. Since 1922, the IAU General Assembly meets every three years, with the ex
Humboldt University of Berlin
Humboldt University of Berlin is a university in the central borough of Mitte in Berlin, Germany. It was established by Frederick William III on the initiative of Wilhelm von Humboldt, Johann Gottlieb Fichte and Friedrich Ernst Daniel Schleiermacher as the University of Berlin in 1809, opened in 1810, making it the oldest of Berlin's four universities. From 1810 until its closure in 1945, it was named Friedrich Wilhelm University. During the Cold War the university found itself in East Berlin and was de facto split in two when the Free University of Berlin opened in West Berlin; the university received its current name in honour of Alexander and Wilhelm von Humboldt in 1949. The university is divided into nine faculties, including its medical school shared with the Free University of Berlin, has a student enrollment of around 32,000 students, offers degree programmes in some 189 disciplines from undergraduate to postdoctorate level, its main campus is located on the Unter den Linden boulevard in central Berlin.
The university is known worldwide for pioneering the Humboldtian model of higher education, which has influenced other European and Western universities, the university has been called "the mother of all modern universities."As of 2017, the university has been associated with 55 Nobel Prize winners, is considered one of the best universities in Europe as well as one of the most prestigious universities in the world for arts and humanities. It was regarded as the world's preeminent university for the natural sciences during the 19th and early 20th century, is linked to major breakthroughs in physics and other sciences by its professors such as Albert Einstein. Former faculty and notable alumni include eminent philosophers, artists, politicians, mathematicians and Heads of State; the University of Berlin was established on 16 August 1809, on the initiative of the liberal Prussian educational politician Wilhelm von Humboldt by King Friedrich Wilhelm III, during the period of the Prussian Reform Movement.
The university was located in a palace constructed from 1748-1766 for the late Prince Henry, the younger brother of Frederick the Great. After his widow and her ninety-member staff moved out, the first unofficial lectures were given in the building in the winter of 1809. Humboldt faced great resistance to his ideas, he submitted his resignation to the King in April 1810, was not present when the school opened that fall. The first students were admitted on 6 October 1810, the first semester started on 10 October 1810, with 256 students and 52 lecturers in faculties of law, medicine and philosophy under rector Theodor Schmalz; the university celebrates 15 October 1810 as the date of its opening. From 1828 to 1945, the school was named the Friedrich Wilhelm University, in honor of its founder. Ludwig Feuerbach one of the students, made a comment on the university in 1826: "There is no question here of drinking and plesant communal outings. Compared to this temple of work, the other universities appear like public houses."The university has been home to many of Germany's greatest thinkers of the past two centuries, among them the subjective idealist philosopher Johann Gottlieb Fichte, the theologian Friedrich Schleiermacher, the absolute idealist philosopher G.
W. F. Hegel, the Romantic legal theorist Friedrich Carl von Savigny, the pessimist philosopher Arthur Schopenhauer, the objective idealist philosopher Friedrich Schelling, cultural critic Walter Benjamin, famous physicists Albert Einstein and Max Planck; the founders of Marxist theory Karl Marx and Friedrich Engels attended the university, as did poet Heinrich Heine, novelist Alfred Döblin, founder of structuralism Ferdinand de Saussure, German unifier Otto von Bismarck, Communist Party of Germany founder Karl Liebknecht, African American Pan Africanist W. E. B. Du Bois and European unifier Robert Schuman, as well as the influential surgeon Johann Friedrich Dieffenbach in the early half of the 1800s; the structure of German research-intensive universities served as a model for institutions like Johns Hopkins University. Further, it has been claimed that "the'Humboldtian' university became a model for the rest of Europe with its central principle being the union of teaching and research in the work of the individual scholar or scientist."
In addition to the strong anchoring of traditional subjects, such as science, philosophy, history and medicine, the university developed to encompass numerous new scientific disciplines. Alexander von Humboldt, brother of the founder William, promoted the new learning. With the construction of modern research facilities in the second half of the 19th Century teaching of the natural sciences began. Famous researchers, such as the chemist August Wilhelm Hofmann, the physicist Hermann von Helmholtz, the mathematicians Ernst Eduard Kummer, Leopold Kronecker, Karl Weierstrass, the physicians Johannes Peter Müller, Albrecht von Graefe, Rudolf Virchow and Robert Koch, contributed to Berlin University's scientific fame. During this period of enlargement, the university expanded to incorporate other separate colleges in Berlin. An example would be the Pépinière and the Collegium Medico-chirurgicum. In 1717, King Friedrich I had built a quarantine house for Plague at the city gates, which in 1727 was rechristened by the "soldier king" Friedrich