1.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
Romanization
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Romanization, in linguistics, is the conversion of writing from a different writing system to the Roman script, or a system for doing so. Methods of romanization include transliteration, for representing written text, and transcription, for representing the spoken word, There are many consistent or standardized romanization systems. They can be classified by their characteristics, source, or donor language – A system may be tailored to romanize text from a particular language, or a series of languages, or for any language in a particular writing system. A language-specific system typically preserves language features like pronunciation, while the one may be better for cataloguing international texts. Target, or receiver language – Most systems are intended for an audience that speaks or reads a particular language and this affects the ease of creation, digital storage and transmission, reproduction, and reading of the romanized text. Reversibility – Whether or not the original can be restored from the converted text, some reversible systems allow for an irreversible simplified version. Most romanizations are intended to enable the reader who is unfamiliar with the original script to pronounce the source language reasonably accurately. Such romanizations follow the principle of phonemic transcription and attempt to render the significant sounds of the original as faithfully as possible in the target language, the popular Hepburn romanization of Japanese is an example of a transcriptive romanization designed for English speakers. The International Phonetic Alphabet is the most common system of phonetic transcription, for most language pairs, building a usable romanization involves tradeoffs between the two extremes. In modern times the chain of transcription is usually spoken foreign language, written language, written native language. Reducing the number of processes, i. e. removing one or both steps of writing, usually leads to more accurate oral articulations. In general, outside a limited audience of scholars romanizations tend to lean more towards transcription, Romanization standards include the following, Deutsche Morgenländische Gesellschaft, Adopted by the International Convention of Orientalist Scholars in Rome. It is the basis for the very influential Hans Wehr dictionary, qalam, A system that focuses upon preserving the spelling, rather than the pronunciation, and uses mixed case ISO 233-2, Simplified transliteration. Buckwalter transliteration, Developed at Xerox by Tim Buckwalter, doesnt require unusual diacritics ALA-LC Arabic chat alphabet There are romanization systems for both Modern and Ancient Greek. ALA-LC Beta Code Greeklish ISO843 The Hebrew alphabet is romanized using several standards, ANSI Z39.25 UNGEGN ISO259, ALA-LC The Brahmic family of abugidas is used for languages of the Indian subcontinent and south-east Asia. There is a tradition in the west to study Sanskrit. Various transliteration conventions have been used for Indic scripts since the time of Sir William Jones, ISO15919, A standard transliteration convention was codified in the ISO15919 standard. It uses diacritics to map the much larger set of Brahmic consonants, see also Transliteration of Indic scripts, how to use ISO15919
3.
Ticker symbol
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A ticker symbol or stock symbol is an abbreviation used to uniquely identify publicly traded shares of a particular stock on a particular stock market. A stock symbol may consist of letters, numbers or a combination of both, ticker symbol refers to the symbols that were printed on the ticker tape of a ticker tape machine. Stock symbols are unique identifiers assigned to each security traded on a particular market, for example, AAPL is for Apple Inc. OODH is for Orion DHC, Inc. and HD is for Home Depot, a stock symbol can consist of letters, numbers, or a combination of both, and is a way to uniquely identify that stock. The symbols were kept as short as possible to reduce the number of characters that had to be printed on the ticker tape, the allocation of symbols and formatting convention is specific to each stock exchange. In the US, for example, stock tickers are typically between 1 and 4 letters and represent the name where possible. In Europe, most exchanges use three-letter codes, for example Dutch consumer goods company Unilever traded on the Amsterdam Euronext exchange has the symbol UNA, while in Asia, numbers are often used as stock tickers to avoid issues for international investors when using non-Latin scripts. For example, the bank HSBCs stock traded on the Hong Kong Stock Exchange has the ticker symbol 0005, symbols sometimes change to reflect mergers. Prior to the 1999 merger with Mobil Oil, Exxon used a spelling of the company XON as its ticker symbol. The symbol of the firm after the merger was XOM, symbols are sometimes reused, in the US the single-letter symbols are particularly sought after as vanity symbols. For example, since Mar 2008 Visa Inc. has used the symbol V that had previously used by Vivendi which had delisted. To fully qualify a stock, both the ticker and the exchange or country of listing needs to be known, on many systems both must be specified to uniquely identify the security. This is often done by appending the location or exchange code to the ticker, although stock tickers identify a security, they are exchange dependent, generally limited to stocks and can change. These limitations have led to the development of other codes in financial markets to identify securities for settlement purposes, the most prevalent of these is the International Securities Identifying Number. An ISIN uniquely identifies a security and its structure is defined in ISO6166, Securities for which ISINs are issued include bonds, commercial paper, stocks, and warrants. The ISIN identifies the security, not the exchange on which it trades, for instance, Daimler AG stock trades on twenty-two different stock exchanges worldwide, and is priced in five different currencies, it has the same ISIN on each, though not the same ticker symbol. ISIN cannot specify a particular trade in this case, and another identifier, following the introduction of the Sequence trading platform in 1996, EPICs were renamed Tradable Instrument Display Mnemonics, but they are still widely referred to as EPICs. Stocks can also be identified using their SEDOL number or their ISIN, in the United States, modern letter-only ticker symbols were developed by Standard & Poors to bring a national standard to investing
4.
Tokyo Stock Exchange
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The Tokyo Stock Exchange, which is called Tōshō or TSE/TYO for short, is a stock exchange located in Tokyo, Japan. It is the fourth largest stock exchange in the world by market capitalization of its listed companies. It had 2,292 listed companies with a market capitalization of US$4.09 trillion as of April 2015. In July 2012 a planned merger with the Osaka Securities Exchange was approved by the Japan Fair Trade Commission, the resulting entity, the Japan Exchange Group, was launched on January 1,2013. The TSE is incorporated as a kabushiki gaisha with nine directors, four auditors and its headquarters are located at 2-1 Nihonbashi-Kabutochō, Chūō, Tokyo, or Kabuto-chō, which is the largest financial district in Japan. Its operating hours are from 8,00 to 11,30 a. m. from April 24,2006, the afternoon trading session started at its usual time of 12,30 p. m. Stocks listed on the TSE are separated into the First Section for large companies, the Second Section for mid-sized companies, as of October 31,2010, there are 1,675 First Section companies,437 Second Section companies and 182 Mothers companies. Ninety-four domestic and 10 foreign securities companies participate in TSE trading, see, Members of the Tokyo Stock Exchange Other TSE-related institutions include, The exchanges press club, called the Kabuto Club, which meets on the third floor of the TSE building. Most Kabuto Club members are affiliated with the Nihon Keizai Shimbun, Kyodo News, Jiji Press, or business television broadcasters such as Bloomberg LP, the Kabuto Club is generally busiest during April and May, when public companies release their annual accounts. On 15 June 2007, the TSE paid $303 million to acquire a 4. 99% stake in Singapore Exchange Ltd. The Tokyo Stock Exchange was established on May 15,1878, as the Tokyo Kabushiki Torihikijo under the direction of then-Finance Minister Okuma Shigenobu, trading began on June 1,1878. In 1943, the exchange was combined with ten other stock exchanges in major Japanese cities to form a single Japanese Stock Exchange, the combined exchange was shut down and reorganized shortly after the bombing of Nagasaki. The Tokyo Stock Exchange reopened under its current Japanese name on May 16,1949, a new facility, called TSE Arrows, opened on May 9,2000. In 2010, the TSE launched its Arrowhead trading facility, in 2001, the TSE restructured itself as a stock company, before this time, it was structured as an incorporated association with its members as shareholders. The interruption in trading was the worst in the history of the exchange, trading was suspended for four-and-a-half hours. Mizuho failed to catch the error, the Tokyo Stock Exchange initially blocked attempts to cancel the order, on 11 December, the TSE acknowledged that its system was at fault in the Mizuho trade. On 21 December, Takuo Tsurushima, chief executive of the TSE, and two other senior executives resigned over the Mizuho affair. On January 17,2006, the Nikkei 225 fell 2. 8%, its fastest drop in nine months, the Tokyo Stock Exchange closed early on January 18 due to the trade volume threatening to exceed the exchanges computer systems capacity of 4.5 million trades per day
5.
Hamamatsu
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Hamamatsu is a city located in western Shizuoka Prefecture, Japan. As of September 1,2015, the city had an population of 789,407, making it the prefectures largest city. The total area was 1,558.06 km2 and it became a city designated by government ordinance on April 1,2007. Hamamatsu is 260 kilometres southwest of Tokyo, Hamamatsu consists of a flat plain and the Mikatahara Plateau in the south, and a mountainous area in the north. It is roughly bordered by Lake Hamana to the west, the Tenryū River to the east, in the Nara period, it became the capital of Tōtōmi Province. During the Sengoku period, Hamamatsu Castle was the home of future Shogun Tokugawa Ieyasu, Hamamatsu flourished during the Edo period under a succession of daimyō rulers as a castle town, and as a post town on the Tōkaidō. After the Meiji Restoration, Hamamatsu became a short-lived prefecture from 1871 to 1876, Hamamatsu Station opened on the Tōkaidō Main Line in 1889. The same year, in a reform of Japan, Hamamatsu became a town. April 1,1991, The first Hamamatsu International Piano Competition was held, may 1,1994, Act City Hamamatsu opened. October 1,1995, Hamamatsu Museum of Musical Instruments opened, April 1,1996, Hamamatsu is designated a core city by the central government. June 1,1996, Hamamatsu City Fruit Park opened, january 1,1997, Started separated collection of garbage in residential areas. April 1,1997, Hamamatsu is designated as an Omnibus Town, April 1,1998, Act City Musical School opened. April 3,2000, Shizuoka University of Art and Culture opened, July 1,2001, The citys 90th anniversary is commemorated August 1,2002, Launched the conference on Pan-Hamanako Designated City Simulation. April 1,2003, Shizuoka New Kawafuji National High School Competition was held, june 1,2003, Launched Tenryūgawa-Hamanako Region Merger Conference. April 8 – October 11,2004, Pacific Flora 2004 was held at Hamanako Garden Park, inasa District and Iwata District were both dissolved as a result of this merger. Therefore, there are no more left in Shizuoka Prefecture. April 1,2007, Hamamatsu became a city designated by government ordinance by the central government. The climate in southern Hamamatsu is mild with little snowfall in the winter, however, it is windy in winter because of the dry monsoon called Enshū no Karakaze, the climate in northern Hamamatsu is much harsher because of foehn winds
6.
Shizuoka Prefecture
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Shizuoka Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. The capital is the city of Shizuoka, while Hamamatsu is the largest city by population, Shizuoka Prefecture was formed from the former Tōtōmi, Suruga and Izu provinces. The area was the home of the first Tokugawa Shogun, Tokugawa Ieyasu held the region until he conquered the lands of the Hōjō clan in the Kantō region and placed land under the stewardship of Oda Nobunaga. After becoming shogun, Tokugawa took the back for his family. With the creation of Shizuoka han in 1868, it again became the residence of the Tokugawa family. Shizuoka Prefecture is an elongated region following the coast of the Pacific Ocean at the Suruga Bay, in the west, the prefecture extends deep into the Japan Alps. In the east, it becomes a narrower coast bounded in the north by Mount Fuji, until it comes to the Izu Peninsula, throughout history, a disastrous earthquake called the Tokai earthquake has hit Shizuoka every 100 to 150 years. On Tuesday, March 15,2011, Shizuoka Prefecture was hit with a magnitude 6.2 earthquake approximately 42 km NNE of Shizuoka City, ISBN 978-0-674-01753-5, OCLC58053128 Official Shizuoka Prefecture website Official Shizuoka Guide
7.
Japan
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Japan is a sovereign island nation in Eastern Asia. Located in the Pacific Ocean, it lies off the eastern coast of the Asia Mainland and stretches from the Sea of Okhotsk in the north to the East China Sea, the kanji that make up Japans name mean sun origin. 日 can be read as ni and means sun while 本 can be read as hon, or pon, Japan is often referred to by the famous epithet Land of the Rising Sun in reference to its Japanese name. Japan is an archipelago consisting of about 6,852 islands. The four largest are Honshu, Hokkaido, Kyushu and Shikoku, the country is divided into 47 prefectures in eight regions. Hokkaido being the northernmost prefecture and Okinawa being the southernmost one, the population of 127 million is the worlds tenth largest. Japanese people make up 98. 5% of Japans total population, approximately 9.1 million people live in the city of Tokyo, the capital of Japan. Archaeological research indicates that Japan was inhabited as early as the Upper Paleolithic period, the first written mention of Japan is in Chinese history texts from the 1st century AD. Influence from other regions, mainly China, followed by periods of isolation, from the 12th century until 1868, Japan was ruled by successive feudal military shoguns who ruled in the name of the Emperor. Japan entered into a period of isolation in the early 17th century. The Second Sino-Japanese War of 1937 expanded into part of World War II in 1941, which came to an end in 1945 following the bombings of Hiroshima and Nagasaki. Japan is a member of the UN, the OECD, the G7, the G8, the country has the worlds third-largest economy by nominal GDP and the worlds fourth-largest economy by purchasing power parity. It is also the worlds fourth-largest exporter and fourth-largest importer, although Japan has officially renounced its right to declare war, it maintains a modern military with the worlds eighth-largest military budget, used for self-defense and peacekeeping roles. Japan is a country with a very high standard of living. Its population enjoys the highest life expectancy and the third lowest infant mortality rate in the world, in ancient China, Japan was called Wo 倭. It was mentioned in the third century Chinese historical text Records of the Three Kingdoms in the section for the Wei kingdom, Wa became disliked because it has the connotation of the character 矮, meaning dwarf. The 倭 kanji has been replaced with the homophone Wa, meaning harmony, the Japanese word for Japan is 日本, which is pronounced Nippon or Nihon and literally means the origin of the sun. The earliest record of the name Nihon appears in the Chinese historical records of the Tang dynasty, at the start of the seventh century, a delegation from Japan introduced their country as Nihon
8.
Musical instrument
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A musical instrument is an instrument created or adapted to make musical sounds. In principle, any object that produces sound can be a musical instrument—it is through purpose that the object becomes a musical instrument, the history of musical instruments dates to the beginnings of human culture. Early musical instruments may have used for ritual, such as a trumpet to signal success on the hunt. Cultures eventually developed composition and performance of melodies for entertainment, Musical instruments evolved in step with changing applications. The date and origin of the first device considered an instrument is disputed. The oldest object that some refer to as a musical instrument. Some consensus dates early flutes to about 37,000 years ago, many early musical instruments were made from animal skins, bone, wood, and other non-durable materials. Musical instruments developed independently in many populated regions of the world, however, contact among civilizations caused rapid spread and adaptation of most instruments in places far from their origin. By the Middle Ages, instruments from Mesopotamia were in maritime Southeast Asia, development in the Americas occurred at a slower pace, but cultures of North, Central, and South America shared musical instruments. By 1400, musical instrument development slowed in areas and was dominated by the Occident. Musical instrument classification is a discipline in its own right, Instruments can be classified by their effective range, their material composition, their size, etc. However, the most common method, Hornbostel-Sachs, uses the means by which they produce sound. The academic study of instruments is called organology. Once humans moved from making sounds with their bodies—for example, by using objects to create music from sounds. Primitive instruments were designed to emulate natural sounds, and their purpose was ritual rather than entertainment. The concept of melody and the pursuit of musical composition were unknown to early players of musical instruments. A player sounding a flute to signal the start of a hunt does so without thought of the notion of making music. Musical instruments are constructed in an array of styles and shapes
9.
Electronics
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Electronics is the science of controlling electrical energy electrically, in which the electrons have a fundamental role. Commonly, electronic devices contain circuitry consisting primarily or exclusively of active semiconductors supplemented with passive elements, the science of electronics is also considered to be a branch of physics and electrical engineering. The ability of electronic devices to act as switches makes digital information processing possible, until 1950 this field was called radio technology because its principal application was the design and theory of radio transmitters, receivers, and vacuum tubes. Today, most electronic devices use semiconductor components to perform electron control and this article focuses on engineering aspects of electronics. Components are generally intended to be connected together, usually by being soldered to a circuit board. Components may be packaged singly, or in more complex groups as integrated circuits, some common electronic components are capacitors, inductors, resistors, diodes, transistors, etc. Components are often categorized as active or passive, vacuum tubes were among the earliest electronic components. They were almost solely responsible for the revolution of the first half of the Twentieth Century. They took electronics from parlor tricks and gave us radio, television, phonographs, radar, long distance telephony and they played a leading role in the field of microwave and high power transmission as well as television receivers until the middle of the 1980s. Since that time, solid state devices have all but completely taken over, vacuum tubes are still used in some specialist applications such as high power RF amplifiers, cathode ray tubes, specialist audio equipment, guitar amplifiers and some microwave devices. The 608 contained more than 3,000 germanium transistors, thomas J. Watson Jr. ordered all future IBM products to use transistors in their design. From that time on transistors were almost exclusively used for computer logic, circuits and components can be divided into two groups, analog and digital. A particular device may consist of circuitry that has one or the other or a mix of the two types, most analog electronic appliances, such as radio receivers, are constructed from combinations of a few types of basic circuits. Analog circuits use a range of voltage or current as opposed to discrete levels as in digital circuits. The number of different analog circuits so far devised is huge, especially because a circuit can be defined as anything from a single component, analog circuits are sometimes called linear circuits although many non-linear effects are used in analog circuits such as mixers, modulators, etc. Good examples of analog circuits include vacuum tube and transistor amplifiers, one rarely finds modern circuits that are entirely analog. These days analog circuitry may use digital or even microprocessor techniques to improve performance and this type of circuit is usually called mixed signal rather than analog or digital. Sometimes it may be difficult to differentiate between analog and digital circuits as they have elements of both linear and non-linear operation, an example is the comparator which takes in a continuous range of voltage but only outputs one of two levels as in a digital circuit
10.
Motorcycle
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A motorcycle is a two- or three-wheeled motor vehicle. Motorcycle design varies greatly to suit a range of different purposes, long travel, commuting, cruising, sport including racing. Motorcycling is riding a motorcycle and related social activity such as joining a motorcycle club, in 1894, Hildebrand & Wolfmüller became the first series production motorcycle, and the first to be called a motorcycle. In 2014, the three top motorcycle producers globally by volume were Honda, Yamaha, and Hero MotoCorp, in developing countries, motorcycles are overwhelmingly utilitarian due to lower prices and greater fuel economy. Of all the motorcycles in the world, 58% are in the Asia-Pacific and Southern and Eastern Asia regions, according to the United States Department of Transportation the number of fatalities per vehicle mile traveled was 37 times higher for motorcycles than for cars. The term motorcycle has different legal definitions depending on jurisdiction, there are three major types of motorcycle, street, off-road, and dual purpose. Within these types, there are many sub-types of motorcycles for different purposes, there is often a racing counterpart to each type, such as road racing and street bikes, or motocross and dirt bikes. Street bikes include cruisers, sportbikes, scooters and mopeds, off-road motorcycles include many types designed for dirt-oriented racing classes such as motocross and are not street legal in most areas. Dual purpose machines like the style are made to go off-road but include features to make them legal. Each configuration offers either specialised advantage or broad capability, and each design creates a different riding posture, the first internal combustion, petroleum fueled motorcycle was the Daimler Reitwagen. It was designed and built by the German inventors Gottlieb Daimler and Wilhelm Maybach in Bad Cannstatt, instead, it relied on two outrigger wheels to remain upright while turning. The inventors called their invention the Reitwagen and it was designed as an expedient testbed for their new engine, rather than a true prototype vehicle. The first commercial design for a cycle was a three-wheel design called the Butler Petrol Cycle. He exhibited his plans for the vehicle at the Stanley Cycle Show in London in 1884, the vehicle was built by the Merryweather Fire Engine company in Greenwich, in 1888. The engine was liquid-cooled, with a radiator over the driving wheel. Speed was controlled by means of a valve lever. No braking system was fitted, the vehicle was stopped by raising and lowering the rear driving wheel using a foot-operated lever, the driver was seated between the front wheels. It wasnt, however, a success, as Butler failed to find sufficient financial backing, many authorities have excluded steam powered, electric motorcycles or diesel-powered two-wheelers from the definition of a motorcycle, and credit the Daimler Reitwagen as the worlds first motorcycle
11.
All-terrain vehicle
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As the name implies, it is designed to handle a wider variety of terrain than most other vehicles. Although it is a vehicle in some countries, it is not street-legal within most states and provinces of Australia. By the current ANSI definition, ATVs are intended for use by an operator, although some companies have developed ATVs intended for use by the operator. These ATVs are referred to as tandem ATVs, the rider sits on and operates these vehicles like a motorcycle, but the extra wheels give more stability at slower speeds. Although equipped with three or four wheels, six-wheel models exist for specialized applications, engine sizes of ATVs currently for sale in the United States, range from 49 to 1,000 cc. Royal Enfield built and sold the first powered quadracycle in 1893. It had many components, including handle bars. The Royal Enfield resembles a modern ATV-style quad bike but was designed as a form of carriage for road use. With the introduction of straddle ridden ATVs, the term AATV was introduced to define the original amphibious ATV category, the first three-wheeled ATV was the Sperry-Rand Tricart. It was designed in 1967 as a project of John Plessinger at the Cranbrook Academy of Arts near Detroit. The Tricart was straddle-ridden with a rather than sit-on style. In 1968 Plessinger sold the Tricart patents and design rights to Sperry-Rand New Holland who manufactured them commercially, numerous small American manufacturers of 3-wheelers followed. I. and Hart to Hart. Dubbed the US90 and later—when Honda acquired the trademark on the term—the ATC90, clearly influenced by earlier ATVs, it featured large balloon tires instead of a mechanical suspension. By the early 1980s, suspension and lower-profile tires were introduced, the 1982 Honda ATC200E Big Red was a landmark model. It featured both suspension and racks, making it the first utility three-wheeled ATV, the ability to go anywhere on terrain that most other vehicles could not cross soon made them popular with US and Canadian hunters, and those just looking for a good trail ride. Soon other manufacturers introduced their own models, sport models were also developed by Honda, which had a virtual monopoly in the market due to effective patents on design and engine placement. The 1981 ATC250R was the first high-performance three-wheeler, featuring full suspension, a 248 cc air cooled engine, a five-speed transmission with manual clutch. For the sporting trail rider, the 1983 ATC200X was another landmark machine and it used an easy-to-handle 192 cc four-stroke that was ideal for new participants in the sport. Today, ATC200Xs can be found on the market in all conditions and prices, in 1985, Honda also introduced the new ATC350X
12.
Wheelchairs
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A wheelchair, often abbreviated to just chair, is a chair with wheels, used when walking is difficult or impossible due to illness, injury, or disability. Wheelchairs come in a variety of formats to meet the specific needs of their users. They may include specialized seating adaptions, individualized controls, and may be specific to particular activities, as seen with sports wheelchairs and beach wheelchairs. The earliest records of wheeled furniture are an inscription found on a slate in China. The first records of wheeled seats being used for transporting disabled people date to three centuries later in China, the Chinese used early wheelbarrows to move people as well as heavy objects. A distinction between the two functions was not made for several hundred years, around 525 CE, when images of wheeled chairs made specifically to carry people begin to occur in Chinese art. Later records show the use of technology in Europe by the Renaissance. The invalid carriage or Bath chair brought the technology into more common use from around 1760, in 1887, wheelchairs were introduced to Atlantic City so invalid tourists could rent them to enjoy the Boardwalk. Soon, many healthy tourists also rented the decorated rolling chairs and servants to them as a show of decadence. In 1933 Harry Jennings and his disabled friend Herbert Everest, both engineers, invented the first lightweight, steel, collapsible wheelchair. Everest had previously broken his back in a mining accident, Everest and Jennings saw the business potential of the invention and went on to become the first mass-market manufacturers of wheelchairs. Their x-brace design is still in use, albeit with updated materials. There are a variety of types of wheelchair, differing by propulsion method, mechanisms of control. Some wheelchairs are designed for everyday use, others for single activities. The iBot is perhaps the best known example of this in recent years, a self-propelled manual wheelchair incorporates a frame, seat, one or two footplates and four wheels, usually two caster wheels at the front and two large wheels at the back. There will generally also be a seat cushion. As this causes friction and heat build-up, particularly on long downslopes, everyday manual wheelchairs come in two major varieties, folding or rigid. Folding chairs are generally low-end designs, whose predominant advantage is being able to fold, however this is largely an advantage for part-time users who may need to store the wheelchair more often than use it
13.
Personal water craft
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A personal water craft, also called water scooter, and comically a boatercycle, is a recreational watercraft that the rider sits or stands on, rather than inside of, as in a boat. The first and most popular being a sit downor couch, where the rider uses the watercraft mainly sitting down, the second style is a stand up, where the rider uses the watercraft standing up. The stand up styles are built for one rider and is used more for doing tricks, racing, both styles have an inboard engine driving a pump jet that has a screw-shaped impeller to create thrust for propulsion and steering. They are often referred by the brand names Jet Ski, WaveRunner. Most are designed for two or three people, though four-passenger models exist, there is a wide variety of jet boats many of which exceed 30–40 feet in length. Companies such as UK based *DJR Ltd specialise in building high end luxury freestyle machines based on the Yamaha superjet combined with an aftermarket hull, two thousand Vincent Amandas were exported Australia, Asia, Europe and the United States. In the 1960s, the idea was developed further by Clayton Jacobson II of Byron Bay, Australia. Originally a motocross enthusiast, Jacobsons idea was designed in the mid-1960s, powered by an internal rather than an outboard motor, made of all aluminum. Jacobson eventually quit his job in banking to devote himself to developing the idea and it differed slightly from modern personal watercraft but had definite similarities. He completed a prototype a year later made of fiberglass. The first Clayton-type PWC to reach the market was designed by Bombardier in the late 1960s, bombardiers original designs were not very popular and Bombardier left the business before 1970. Stand-up PWCs first appeared on the US market in 1973 and were produced by Kawasaki and these were mass-produced boats to be used by only one rider. While they are produced today, the more popular design, is the sit down variety of PWC. These sit down models have been produced by Kawasaki, Bombardier, Yamaha, Honda, Polaris, as of 2010, the major manufacturers of PWCs were Kawasaki, Bombardier and Yamaha. Both Yamaha and Kawasaki continue to stand up models but it is a small percentage of the overall market. P1 AquaX is considered the best personal watercraft racing series in the world, the Series is based on strength and skill, so only the best make it through the ranks and to the top. The first series was launched in the UK, in May 2011 by London-based sports promoter Powerboat P1, the series grew quickly by attracting a mix of new and current racers to a new type of racing and in 2013, P1 rolled out a second series in the USA. The Series continues to expand quickly around the world, PWCs are small, fast, easily handled, fairly easy to use, affordable, and their propulsion systems do not have external propellers, making them safer for swimmers and wildlife
14.
Outboard motor
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An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorized method of propelling small watercraft, as well as providing propulsion, outboards provide steering control, as they are designed to pivot over their mountings and thus control the direction of thrust. The skeg also acts as a rudder when the engine is not running, unlike inboard motors, outboard motors can be easily removed for storage or repairs. In order to eliminate the chances of hitting bottom with an outboard motor and this helps when traveling through shallow waters where there may be debris that could potentially damage the motor as well as the propeller. Large outboards are usually bolted to the transom, and are linked to controls at the helm, small outboard motors, up to 15 horsepower or so are easily portable. They are affixed to the boat via clamps, and thus moved from boat to boat. These motors typically use a manual system, with throttle and gearshift controls mounted on the body of the motor. To provide auxiliary power for sailboats, for trolling aboard larger craft, in this application, the motor is frequently installed on the transom alongside and connected to the primary outboard to enable helm steering. In addition many small manufacturers have begun offering variants with power trim/tilt. Pump-jet propulsion is available as an option on most outboard motors, although less efficient than an open propeller, they are particularly useful in applications where the ability to operate in very shallow water is important. They also eliminate the dangers of an open propeller. The first known outboard motor was a small 5 kilogram electric unit designed around 1870 by Gustave Trouvé, later about 25 petrol powered outboards may have been produced in 1896 by American Motors Co—but neither of these two pioneering efforts appear to have had much impact. The Waterman outboard engine appears to be the first real gasoline-powered outboard offered for sale, the inboard boat motor firm of Caille Motor Company of Detroit were instrumental in making the cylinder and engines. The most successful early outboard motor, was created by Norwegian-American inventor Ole Evinrude in 1909, between 1909 and 1912, Evinrude made thousands of his outboards and the three horse units were sold around the world. His Evinrude Outboard Co. was spun off to other owners, the 1920s were the first high-water mark for the outboard with Evinrude, Johnson, ELTO, Atwater Lockwood and dozens of other makers in the field. Historically, a majority of outboards have been two-stroke powerheads fitted with a due to the designs inherent simplicity, reliability, low cost. Drawbacks include increased pollution, due to the volume of unburned gasoline and oil in their exhaust. In the early 1980s Honda Motor Co. introduced its first four-stroke powerhead, in 1984, Yamaha introduced their first four-stroke powerhead
15.
JPY
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The yen is the official currency of Japan. It is the third most traded currency in the exchange market after the United States dollar. It is also used as a reserve currency after the U. S. dollar, the euro. Before the Meiji Restoration, Japans feudal fiefs all issued their own money, hansatsu, in an array of incompatible denominations. The New Currency Act of 1871 did away with these and established the yen, the former han became prefectures and their mints private chartered banks, which initially retained the right to print money. To bring an end to this situation the Bank of Japan was founded in 1882, following World War II the yen lost much of its prewar value. To stabilize the Japanese economy the exchange rate of the yen was fixed at ¥360 per $1 as part of the Bretton Woods system, when that system was abandoned in 1971, the yen became undervalued and was allowed to float. The yen had appreciated to a peak of ¥271 per $1 in 1973, then underwent periods of depreciation and appreciation due to the 1973 oil crisis, arriving at a value of ¥227 per $1 by 1980. Since 1973, the Japanese government has maintained a policy of intervention. The Japanese government focuses on an export market, and tries to ensure a low yen value through a trade surplus. Since that time, however, the yen has greatly decreased in value, the Bank of Japan maintains a policy of zero to near-zero interest rates and the Japanese government has an extreme anti-inflation policy. Yen derives from the Japanese word 圓, which is cognate with the Chinese yuan, originally, the Chinese had traded silver in mass called sycees and when Spanish and Mexican silver coins arrived, the Chinese called them silver rounds for their circular shapes. The coins and the name appeared in Japan. While the Chinese eventually replaced 圓 with 元, the Japanese continued to use the same word, the spelling and pronunciation yen is standard in English. This is because mainly English speakers who visited Japan at the end of the Edo period to the early Meiji period spelled words this way, ゑん /wen/ in historical kana orthography. In the 16th century, Japanese /e/ and /we/ both had been pronounced and Portuguese missionaries had spelled them ye, some time thereafter, by the middle of the 18th century, /e/ and /we/ came to be pronounced as in modern Japanese, although some regions retain the pronunciation. In the early Meiji era, James Curtis Hepburn, following Medhurst, spelled all es as ye in his A Japanese and that was the first full-scale Japanese-English/English-Japanese dictionary, which had a strong influence on Westerners in Japan and probably prompted the spelling yen. Hepburn revised most of yes to e in the 3rd edition in order to mirror the contemporary pronunciation and this was probably already fixed and has remained so ever since
16.
Earnings before interest and taxes
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In accounting and finance, earnings before interest and taxes, is a measure of a firms profit that includes all expenses except interest and income tax expenses. It is the difference between operating revenues and operating expenses, when a firm does not have non-operating income, then operating income is sometimes used as a synonym for EBIT and operating profit. To calculate EBIT, expenses are subtracted from revenues, net income is later obtained by subtracting interest and taxes from the result
17.
Net income
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In business, net income is an entitys income minus cost of goods sold, expenses and taxes for an accounting period. In the context of the presentation of financial statements, the IFRS Foundation defines net income as synonymous with profit, net income is a distinct accounting concept from profit but the same as net profit. Net income can also be calculated by adding a companys operating income to non-operating income, net income can be distributed among holders of common stock as a dividend or held by the firm as an addition to retained earnings. As profit and earnings are used synonymously for income, net earnings, often, the term income is substituted for net income, yet this is not preferred due to the possible ambiguity. Net income is called the bottom line because it is typically found on the last line of a companys income statement. The items deducted will typically include tax expense, financing expense, likewise, preferred stock dividends will be subtracted too, though they are not an expense. For a merchandising company, subtracted costs may be the cost of goods sold, sales discounts, for a product company advertising, manufacturing, and design and development costs are included
18.
Yamaha Motor Company
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Yamaha Motor Company Limited is a Japanese manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation, the company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012. Led by Genichi Kawakami, the company’s first president, Yamaha Motor began production of its first product, Yamahas initial product was a 125cc two-cycle, single cylinder motorcycle, the YA-1, which was a copy of the German DKW RT125. Yamaha began competing internationally in 1956 when they entered the Catalina Grand Prix, again with the YA-1, the YA-1 was followed by the YA-2 of 1957, another 125cc two stroke, but with significantly improved frame and suspension. The YD-1 of 1957 was a 250cc two-stroke twin cylinder motorcycle, resembling the YA-2, a performance version of this bike, the YDS-1 housed the 250cc two-stroke twin in a double downtube cradle frame and offered the first five-speed transmission in a Japanese motorcycle. This period also saw Yamaha offer its first outboard marine engine, by 1963 Yamahas dedication to both the two-stroke engine and racing paid off with their first victory in international competition, at the Belgium GP, where they won the 250cc class. Success in sales was even more impressive, and Yamaha set up the first of its subsidiaries in this period beginning with Thailand in 1964. 1965 saw the release of a 305cc two-stroke twin, the flagship of the companies lineup and it featured a separate oil supply which directly injected oil into the gasoline prior to combustion. In 1967 a new larger displacement model was added to the range, in 1968 Yamaha launched their first four-stroke motorcycle, the XS-1. Not until 1976 would Yamaha answer the other Japanese brands with a four stroke of their own. The XS-750 a 750cc triple cylinder machine with shaft drive was introduced almost seven years after Hondas breakthrough bike. Yamahas first four-cylinder model, the XS-1100 followed in 1978, again with shaft drive, despite being heavier and more touring oriented than its rivals it produced an impressive string of victories in endurance racing. The 1970s also saw some of the first dedicated off-road bikes for off-road racing, Yamaha was an early innovator in dirt-bike technology, and introduced the first single-shock rear suspension, the trademarked Monoshock of 1973. It appeared in production on the 1974 Yamaha YZ-250, a model which has continued in production, with updates, until 2015, making it Yamahas longest continuous model. Yamaha continued racing throughout the 1960s and 1970s with increasing success in several formats, the decade of the 1970s was capped by the XT500 winning the first Paris-Dakar Rally in 1979. By 1980 the combination of consumer preference and environmental regulation made four strokes increasingly popular, suzuki ended production of their GT two stroke series, including the flagship water-cooled two-stroke 750cc GT-750 in 1977. Kawasaki, who had success throughout the 1970s with their two-stroke triples of 250cc, 350cc, 500cc and 750cc ended production of road-going two strokes in 1980. Yamaha bucked this trend and continued to refine and sell two-strokes for the street into the 1980s and these bikes were performance oriented, water-cooled twin cylinder machines, designed to achieve excellent performance taking advantage of the lower weight of two strokes
19.
Sport
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Usually the contest or game is between two sides, each attempting to exceed the other. Some sports allow a tie game, others provide tie-breaking methods, to one winner. A number of such two-sided contests may be arranged in a tournament producing a champion, many sports leagues make an annual champion by arranging games in a regular sports season, followed in some cases by playoffs. Hundreds of sports exist, from those between single contestants, through to those with hundreds of participants, either in teams or competing as individuals. In certain sports such as racing, many contestants may compete, each against each other, however, a number of competitive, but non-physical, activities claim recognition as mind sports. Sports are usually governed by a set of rules or customs, which serve to ensure fair competition, winning can be determined by physical events such as scoring goals or crossing a line first. It can also be determined by judges who are scoring elements of the sporting performance, records of performance are often kept, and for popular sports, this information may be widely announced or reported in sport news. Sport is also a source of entertainment for non-participants, with spectator sport drawing large crowds to sport venues. Sports betting is in some cases severely regulated, and in some cases is central to the sport, kearney, a consultancy, the global sporting industry is worth up to $620 billion as of 2013. The worlds most accessible and practised sport is running, while football is the most popular spectator sport. The word Sport comes from the Old French desport meaning leisure, other meanings include gambling and events staged for the purpose of gambling, hunting, and games and diversions, including ones that require exercise. Rogets defines the noun sport as an activity engaged in for relaxation, the singular term sport is used in most English dialects to describe the overall concept, with sports used to describe multiple activities. American English uses sports for both terms, the precise definition of what separates a sport from other leisure activities varies between sources. They also recognise that sport can be physical, primarily mind, predominantly motorised, primarily co-ordination. The inclusion of sports within sport definitions has not been universally accepted. Whilst SportAccord recognises a number of mind sports, it is not open to admitting any further mind sports. According to Council of Europe, European Sports Charter, article 2, other bodies advocate widening the definition of sport to include all physical activity. For instance, the Council of Europe include all forms of physical exercise, in competitive events, participants are graded or classified based on their result and often divided into groups of comparable performance
20.
Nikkei 225
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The Nikkei 225, more commonly called the Nikkei, the Nikkei index, or the Nikkei Stock Average, is a stock market index for the Tokyo Stock Exchange. It has been calculated daily by the Nihon Keizai Shimbun newspaper since 1950 and it is a price-weighted index, and the components are reviewed once a year. Currently, the Nikkei is the most widely quoted average of Japanese equities, in fact, it was known as the Nikkei Dow Jones Stock Average from 1975 to 1985. The Nikkei 225 began to be calculated on September 7,1950, since January 2010 the index is updated every 15 seconds during trading sessions. The Nikkei 225 Futures, introduced at Singapore Exchange in 1986, the Nikkei average has deviated sharply from the textbook model of stock averages which grow at a steady exponential rate. Subsequently, it lost nearly all these gains, closing at 7,054.98 on March 10, another major index for the Tokyo Stock Exchange is the Topix. On March 15,2011, the working day after the massive earthquake in the northeast part of Japan, the index dropped over 10% to finish at 8605.15. The index continued to drop throughout 2011, eventually bottoming out at 8160.01 on November 25, putting it at its lowest close since March 10,2009. The Nikkei fell over 17% in 2011, finishing the year at 8455.35, its lowest year-end closing value in nearly thirty years, the Nikkei started 2013 near 10,600, hitting a peak of 15,942 in May. However, shortly afterward, it plunged by almost 10% before rebounding, making it the most volatile stock market index among the developed markets. By 2015, it has reached over 20,000 mark, the index is a price-weighted index. As of late 2014, the company with the largest influence on the index is Fast Retailing, as of February 2017, the Nikkei 225 consists of the following companies, S&P/TOPIX150 Nikkei 225 Components Bloomberg page for NKY, IND Nikkei 225 index on Yahoo. Finance Nikkei 225 index on Google Finance Nikkei 225 profile at Wikinvest Reuters page for. N225
21.
Piano
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The piano is an acoustic, stringed musical instrument invented around the year 1700, in which the strings are struck by hammers. It is played using a keyboard, which is a row of keys that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. The word piano is a form of pianoforte, the Italian term for the early 1700s versions of the instrument. The first fortepianos in the 1700s had a sound and smaller dynamic range. An acoustic piano usually has a wooden case surrounding the soundboard and metal strings. Pressing one or more keys on the keyboard causes a padded hammer to strike the strings. The hammer rebounds from the strings, and the continue to vibrate at their resonant frequency. These vibrations are transmitted through a bridge to a soundboard that amplifies by more efficiently coupling the acoustic energy to the air, when the key is released, a damper stops the strings vibration, ending the sound. Notes can be sustained, even when the keys are released by the fingers and thumbs and this means that the piano can play 88 different pitches, going from the deepest bass range to the highest treble. The black keys are for the accidentals, which are needed to play in all twelve keys, more rarely, some pianos have additional keys. Most notes have three strings, except for the bass that graduates from one to two, the strings are sounded when keys are pressed or struck, and silenced by dampers when the hands are lifted from the keyboard. There are two types of piano, the grand piano and the upright piano. The grand piano is used for Classical solos, chamber music and art song and it is used in jazz. The upright piano, which is compact, is the most popular type, as they are a better size for use in private homes for domestic music-making. During the nineteenth century, music publishers produced many works in arrangements for piano, so that music lovers could play. The piano is widely employed in classical, jazz, traditional and popular music for solo and ensemble performances, accompaniment, with technological advances, amplified electric pianos, electronic pianos, and digital pianos have also been developed. The electric piano became an instrument in the 1960s and 1970s genres of jazz fusion, funk music. The piano was founded on earlier technological innovations in keyboard instruments, pipe organs have been used since Antiquity, and as such, the development of pipe organs enabled instrument builders to learn about creating keyboard mechanisms for sounding pitches
22.
Reed organ
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The pump organ, reed organ, harmonium, or melodeon is a type of free-reed organ that generates sound as air flows past a vibrating piece of thin metal in a frame. The piece of metal is called a reed, the finer instruments have a unique tone, and the cabinets of those intended for churches and affluent homes were often excellent pieces of furniture. Several million free-reed organs and melodeons were made in the USA, during this time Estey Organ and Mason & Hamlin were popular manufacturers. The harmoniums design incorporates free reeds and derives from the earlier regal, a harmonium-like instrument was exhibited by Gabriel Joseph Grenié in 1810. He called it an orgue expressif, because his instrument was capable of greater expression, alexandre Debain improved Greniés instrument and gave it the name harmonium when he patented his version in 1840. There was concurrent development of similar instruments, beginning in 1885, the firm of Mason & Hamlin, of Boston made their instruments with the suction bellows, and this method of construction soon superseded all others in America. Harmoniums reached the height of their popularity in the West in the late 19th, an added attraction of the harmonium in tropical regions was that the instrument held its tune regardless of heat and humidity, unlike the piano. This export market was lucrative for manufacturers to produce harmoniums with cases impregnated with chemicals to prevent woodworm. At the peak of the instruments Western popularity around 1900, a variety of styles of harmoniums were being produced. These ranged from simple models with plain cases and only four or five stops, up to large instruments with ornate cases, up to a dozen stops, expensive harmoniums were often built to resemble pipe organs, with ranks of fake pipes attached to the top of the instrument. Small numbers of harmoniums were built with two manuals, some were even built with pedal keyboards, which required the use of an assistant to run the bellows or, for some of the later models, an electrical pump. The invention of the organ in the mid-1930s spelled the end of the harmoniums success in the West. By this time, harmoniums had reached high levels of complexity, not only through the need to provide instruments with a greater tonal range. The last mass-producer of harmoniums in North America was the Estey company, which ceased manufacture in the mid-1950s, as the existing stock of instruments aged and spare parts became hard to find, more and more were either scrapped or sold. It was not uncommon for harmoniums to be modernised by having electric blowers fitted, the majority of Western harmoniums today are in the hands of enthusiasts, though the instrument remains popular in South Asia. Modern electronic keyboards can emulate the sound of the pump organ, the acoustical effects described below are a result of the free-reed mechanism. Therefore, they are identical for the Western and Indian harmoniums. And as its vibrators also admit of a delicate and durable tuning and this arrangement was difficult to play on
23.
Manufacturing
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Manufacturing is the value added to production of merchandise for use or sale using labour and machines, tools, chemical and biological processing, or formulation. Manufacturing engineering or manufacturing process are the steps through which raw materials are transformed into a final product, the manufacturing process begins with the product design, and materials specification from which the product is made. These materials are modified through manufacturing processes to become the required part. Manufacturing takes turns under all types of economic systems, in a free market economy, manufacturing is usually directed toward the mass production of products for sale to consumers at a profit. In a collectivist economy, manufacturing is more directed by the state to supply a centrally planned economy. In mixed market economies, manufacturing occurs under some degree of government regulation, modern manufacturing includes all intermediate processes required the production and integration of a products components. Some industries, such as semiconductor and steel manufacturers use the term fabrication instead, the manufacturing sector is closely connected with engineering and industrial design. Examples of major manufacturers in North America include General Motors Corporation, General Electric, Procter & Gamble, General Dynamics, Boeing, Pfizer, examples in Europe include Volkswagen Group, Siemens, and Michelin. Examples in Asia include Sony, Huawei, Lenovo, Toyota, Samsung, in its earliest form, manufacturing was usually carried out by a single skilled artisan with assistants. In much of the world, the guild system protected the privileges. Before the Industrial Revolution, most manufacturing occurred in rural areas, entrepreneurs organized a number of manufacturing households into a single enterprise through the putting-out system. Toll manufacturing is an arrangement whereby a first firm with specialized equipment processes raw materials or semi-finished goods for a second firm, manufacturing provides important material support for national infrastructure and for national defense. On the other hand, most manufacturing may involve significant social and environmental costs, the clean-up costs of hazardous waste, for example, may outweigh the benefits of a product that creates it. Hazardous materials may expose workers to health risks and these costs are now well known and there is effort to address them by improving efficiency, reducing waste, using industrial symbiosis, and eliminating harmful chemicals. The negative costs of manufacturing can also be addressed legally, developed countries regulate manufacturing activity with labor laws and environmental laws. Across the globe, manufacturers can be subject to regulations and pollution taxes to offset the costs of manufacturing activities. Labor unions and craft guilds have played a role in the negotiation of worker rights. Environment laws and labor protections that are available in developed nations may not be available in the third world, tort law and product liability impose additional costs on manufacturing
24.
Tuning fork
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A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal. It resonates at a constant pitch when set vibrating by striking it against a surface or with an object. The pitch that a tuning fork generates depends on the length. It is frequently used as a standard of pitch to tune musical instruments, the tuning fork was invented in 1711 by British musician John Shore, Sergeant Trumpeter and Lutenist to the court. A tuning fork is an acoustic resonator used in many applications to produce a fixed tone. The reason for this is that the frequency of the first overtone is about 52/22 = 25/4 = 6 1⁄4 times the fundamental. When the tuning fork is struck, little of the energy goes into the overtone modes, they die out correspondingly faster. It is easier to other instruments with this pure tone. Another reason for using the shape is that, when it vibrates in its principal mode. There is a node at the base of each prong, the fork is usually struck, and then the handle is pressed against a wooden box resonator, or a table top. Without the resonator the sound of a fork is very faint. The reason for this is that the waves produced by each fork prong are 180° out of phase with the other, so at a distance from the fork they interfere. Commercial tuning forks are normally tuned to the pitch at the factory. They can be retuned by filing material off the prongs, filing the ends of the prongs raises the pitch, while filing the inside of the base of the prongs lowers it. Tuning forks used by orchestras between 1750 and 1820 mostly had a frequency of A =423.5 Hz, although there were many forks, standard tuning forks are available that vibrate at all the musical pitches within the central octave of the piano, and other pitches. Well-known manufacturers of tuning forks include Ragg and John Walker, both of Sheffield, England, the pitch of a tuning fork varies slightly with temperature, due mainly to a slight decrease in the modulus of elasticity of steel with increasing temperature. A change in frequency of one vibration in 21,000 per °F change is typical for a tuning fork. The frequency decreases with increasing temperature, tuning forks are manufactured to have their correct pitch at a standard temperature
25.
World War II
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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
26.
Technology
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Technology is the collection of techniques, skills, methods and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, the human species use of technology began with the conversion of natural resources into simple tools. The steady progress of technology has brought weapons of ever-increasing destructive power. It has helped develop more advanced economies and has allowed the rise of a leisure class, many technological processes produce unwanted by-products known as pollution and deplete natural resources to the detriment of Earths environment. Various implementations of technology influence the values of a society and raise new questions of the ethics of technology, examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics. Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the condition or worsens it. The use of the technology has changed significantly over the last 200 years. Before the 20th century, the term was uncommon in English, the term was often connected to technical education, as in the Massachusetts Institute of Technology. The term technology rose to prominence in the 20th century in connection with the Second Industrial Revolution, the terms meanings changed in the early 20th century when American social scientists, beginning with Thorstein Veblen, translated ideas from the German concept of Technik into technology. In German and other European languages, a distinction exists between technik and technologie that is absent in English, which translates both terms as technology. By the 1930s, technology referred not only to the study of the industrial arts, dictionaries and scholars have offered a variety of definitions. Ursula Franklin, in her 1989 Real World of Technology lecture, gave another definition of the concept, it is practice, the way we do things around here. The term is used to imply a specific field of technology, or to refer to high technology or just consumer electronics. Bernard Stiegler, in Technics and Time,1, defines technology in two ways, as the pursuit of life by other than life, and as organized inorganic matter. Technology can be most broadly defined as the entities, both material and immaterial, created by the application of mental and physical effort in order to some value. In this usage, technology refers to tools and machines that may be used to solve real-world problems and it is a far-reaching term that may include simple tools, such as a crowbar or wooden spoon, or more complex machines, such as a space station or particle accelerator. Tools and machines need not be material, virtual technology, such as software and business methods. W. Brian Arthur defines technology in a broad way as a means to fulfill a human purpose
27.
Cylinder (engine)
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A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are arranged side by side in a bank, or engine block. Cylinders may be sleeved or sleeveless, a sleeveless engine may also be referred to as a parent-bore engine. A cylinders displacement, or swept volume, can be calculated by multiplying its cross-sectional area by the distance the piston travels within the cylinder, the engine displacement can be calculated by multiplying the swept volume of one cylinder by the number of cylinders. The rings make near contact with the walls, riding on a thin layer of lubricating oil. The first illustration depicts a longitudinal section of a cylinder in a steam engine, the sliding part at the bottom is the piston, and the upper sliding part is a distribution valve that directs steam alternately into either end of the cylinder. Refrigerator and air compressors are heat engines driven in reverse cycle as pumps. Internal combustion engines operate on the inherent volume change accompanying oxidation of gasoline, diesel fuel or ethanol and they are not classical heat engines since they expel the working substance, which is also the combustion product, into the surroundings. The reciprocating motion of the pistons is translated into crankshaft rotation via connecting rods, as a piston moves back and forth, a connecting rod changes its angle, its distal end has a rotating link to the crankshaft. A typical four-cylinder automobile engine has a row of water-cooled cylinders. V engines use two angled cylinder banks, the V configuration is utilized to create a more compact configuration relative to the number of cylinders. For example, there are also rotary turbines, the Wankel engine is a rotary adaptation of the cylinder-piston concept which has been used by Mazda and NSU in automobiles. Rotary engines are relatively quiet because they lack the clatter of reciprocating motion, air-cooled engines generally use individual cases for the cylinders to facilitate cooling. Inline motorcycle engines are an exception, having two-, three-, four-, water-cooled engines with only a few cylinders may also use individual cylinder cases, though this makes the cooling system more complex. The Ducati motorcycle company, which for years used air-cooled motors with individual cylinder cases, in some engines, especially French designs, the cylinders have wet liners. They are formed separately from the casting so that liquid coolant is free to flow around their outsides. Wet-lined cylinders have cooling and a more even temperature distribution. During use, the cylinder is subject to wear from the action of the piston rings
28.
Germany
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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
29.
DKW
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DKW is a German car and motorcycle marque. The company and brand is one of the companies of the modern day Audi company as one of the four companies that formed Auto-Union. In 1916, Danish engineer Jørgen Skafte Rasmussen founded a factory in Zschopau, Saxony, Germany and that year he attempted to produce a steam-driven car, called the DKW. Although unsuccessful, he made a two-stroke toy engine in 1919, in 1932, DKW merged with Audi, Horch and Wanderer to form Auto Union. After World War II, DKW moved to West Germany, with the factory becoming MZ. Auto Union came under Daimler-Benz ownership in 1957 and was purchased by the Volkswagen Group in 1964, the last German-built DKW car was the F102, which ceased production in 1966. Its successor, the four-stroke F103, was marketed under the Audi brand, dKW-badged cars continued to be built under license in Brazil and Argentina until 1967 and 1969 respectively. DKW cars were made from 1928 until 1966, apart from an interruption caused by the Second World War, dKWs always used two-stroke engines, reflecting the companys position by the end of the 1920s as the worlds largest producer of motorcycles. More significant was a series of cars built 300 km to the south in Zwickau in the plant acquired by the companys owner in 1928 when he had become the majority owner in Audi Werke AG. Models F1 to F8 were built between 1931 and 1942, with successor models reappearing after the end of the war in 1945 and they were the first volume production cars in Europe with front wheel drive, and were powered by transversely mounted two-cylinder two-stroke engines. Displacement was 584 or 692 cc, claimed power was initially 15 PS. These models had a generator that doubled as a starter, mounted directly on the crankshaft, dKWs from Zwickau notched up approximately 218,000 units between 1931 and 1942. Between 1929 and 1940, DKW produced a well remembered. Engine displacement was 1,000 cc, later 1,100 cc, the engines had two extra cylinders for forced induction, so they appeared like V6 engines but without spark plugs on the front cylinder pair. In 1939, DKW made a prototype with the first three-cylinder engine, with a displacement of 900 cc, with a streamlined body, the car could run at 115 km/h. It was put into production after World War II, first as an Industrieverband Fahrzeugbau F9 in Zwickau, East Germany, DKW engines were used by Saab as a model for the Saab two-stroke in its Saab 92 car manufacturing venture, in 1947. As Auto Union was based in Saxony in what became the German Democratic Republic and their first line of production took place in Düsseldorf. This van used the engine as the last F8 made before the war
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DKW RT 125
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The RT125 was a German two-stroke motorcycle made by DKW in Zschopau in the 1930s, IFA and MZ in the 1950s and early 1960s, and DKW in Ingolstadt in the 1950s and 1960s. RT stands for Reichstyp or National Model, in the 1930s DKW pioneered the Schnürle two-stroke loop scavenging process to dispense with the use of a deflector piston and improve efficiency of the combustion chamber. DKW also developed an efficient arrangement of transfer ports. These two features were included in the RT125 to great commercial advantage, competitor companies such as Adler and TWN copied the adoption of flat-topped pistons and strove to develop equally transfer port arrangements without infringing DKWs patent. Copies of the RT125 were built by at least eight different entities in at least six countries. In 1938, after the German government discovered that RS Stokvis en Zonen, the RT100, a smaller version of the RT125, had been popular in the Netherlands, and RS Stokvis en Zonen commissioned Royal Enfield to make a motorcycle just like the RT100. The engine size was increased to 125 cc to improve the power output, few were made before production stopped in October 1939, when Royal Enfield converted its factory to war production. After a demonstration of the capability of the DKW RT100 and this version, nicknamed the Flying Flea featured rigid forks and folding footrests and controls, including handlebars. Because Royal Enfield could not provide enough WD/REs to satisfy the demands of the military, the James Cycle Co was commissioned to build the ML, Royal Enfield and James both built civilian versions after the war. WFM of Poland made a version of the RT125, developed into 125/175 cc family motorcycles. RT125 plans were taken to the United Kingdom where they became the basis of the BSA Bantam. After the Second World War, DKWs factories in Zschopau were in the Soviet occupation zone, as such, they were under the control of the Soviet Union until they were handed over to the government of East Germany. The factory continued production of the RT125 under the MZ brand into the 1950s, meanwhile, DKW had reorganized itself in Ingolstadt, where it began production of the RT 125W in 1949. Variants of the RT 125W, usually with larger engines, were in production throughout the 1950s, in the 1950s, after reestablishing themselves as manufacturers of musical instruments, Nippon Gakki decided to use the manufacturing equipment left over from wartime production to make motorcycles. Since the copyright on the RT125 had been voided by the Allies, Nippon Gakki formed the Yamaha Motor Company in 1955 to build their copy of the RT125 as the Yamaha YA-1, which was in production from 1955 to 1958. The YA-1 inherited design characteristics of RT125 and, due to its thin body and chestnut brown tank, was affectionately nicknamed the Aka-tombo
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United Kingdom
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The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, the United Kingdom includes the island of Great Britain, Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign state—the Republic of Ireland. The Irish Sea lies between Great Britain and Ireland, with an area of 242,500 square kilometres, the United Kingdom is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants, together, this makes it the fourth-most densely populated country in the European Union. The United Kingdom is a monarchy with a parliamentary system of governance. The monarch is Queen Elizabeth II, who has reigned since 6 February 1952, other major urban areas in the United Kingdom include the regions of Birmingham, Leeds, Glasgow, Liverpool and Manchester. The United Kingdom consists of four countries—England, Scotland, Wales, the last three have devolved administrations, each with varying powers, based in their capitals, Edinburgh, Cardiff and Belfast, respectively. The relationships among the countries of the UK have changed over time, Wales was annexed by the Kingdom of England under the Laws in Wales Acts 1535 and 1542. A treaty between England and Scotland resulted in 1707 in a unified Kingdom of Great Britain, which merged in 1801 with the Kingdom of Ireland to form the United Kingdom of Great Britain and Ireland. Five-sixths of Ireland seceded from the UK in 1922, leaving the present formulation of the United Kingdom of Great Britain, there are fourteen British Overseas Territories. These are the remnants of the British Empire which, at its height in the 1920s, British influence can be observed in the language, culture and legal systems of many of its former colonies. The United Kingdom is a country and has the worlds fifth-largest economy by nominal GDP. The UK is considered to have an economy and is categorised as very high in the Human Development Index. It was the worlds first industrialised country and the worlds foremost power during the 19th, the UK remains a great power with considerable economic, cultural, military, scientific and political influence internationally. It is a nuclear weapons state and its military expenditure ranks fourth or fifth in the world. The UK has been a permanent member of the United Nations Security Council since its first session in 1946 and it has been a leading member state of the EU and its predecessor, the European Economic Community, since 1973. However, on 23 June 2016, a referendum on the UKs membership of the EU resulted in a decision to leave. The Acts of Union 1800 united the Kingdom of Great Britain, Scotland, Wales and Northern Ireland have devolved self-government
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Birmingham Small Arms Company
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This article is not about Gamo subsidiary BSA Guns Limited or BSA Company or its successors. At its peak, BSA was the largest motorcycle producer in the world, in the late 1950s and early 1960s poor management and failure to develop new products in the motorcycle division led to a dramatic decline of sales to its major USA market. The management had failed to appreciate the importance of the resurgent Japanese motorcycle industry, the original company, The Birmingham Small Arms Company Limited, remains a subsidiary of Manganese Bronze but its name was changed in 1987. BSA began in June 1861 in the Gun Quarter, Birmingham, England and it was formed by a group of fourteen gunsmith members of the Birmingham Small Arms Trade Association. The War Office provided this new grouping of gunsmiths free access to technical drawings, the newly formed company purchased 25 acres of land at Small Heath, Birmingham, built a factory there and made a road on the site calling it Armoury Road. This machinery brought to Birmingham manifested the principle of the inter-changeability of parts, BSAs resort to the use of machinery was rewarded in 1863 with an order for 20,000 Turkish infantry rifles. F. Swinburn under the chairmanship of John Dent Goodman, the first War Office contract was not agreed until 1868. In 1879, the factory, without work, was shut for a year, the military arms trade was precarious. The next year BSA branched out into bicycle manufacture, the gun factory proved remarkably adaptable to the manufacture of cycle parts. What cycles needed was large quantities of standard parts accurately machined at low prices, bicycle production ceased in 1887 as the company concentrated on producing the Lee–Metford magazine-loading rifle for the War Office which was re-equipping the British Army with it. The order was for 1,200 rifles per week, BSA recommenced manufacturing bicycles on their own behalf from 1908. BSA Cycles Ltd was set up in 1919 for the manufacture of bicycles and motorcycles. BSA sold the business to Raleigh in 1957 after separating the bicycle and motorcycle business in 1953. In 1893, BSA commenced making bicycle hubs and continued to supply the cycle trade with bicycle parts up to 1936, BSA bought The Eadie Manufacturing Company of Redditch in 1907 and so began to manufacture the Eadie two speed hub gear and the Eadie coaster brake hub. BSA also signed an agreement with the Three Speed Gear Syndicate in 1907 to manufacture a 3 speed hub under licence. This was later classified as the Sturmey Archer Type X. BSA introduced a Duo hub in the late 1930s which was capable of one fixed gear, all BSA hub gear production temporarily ceased in 1939, until they recommenced making their 3 speed hub around 1945. The Eadie coaster hub made a return in 1953 on two BSA bicycle models. BSA forever ceased production of their hub gears in 1955, BSA sold its ammunition business in 1897 to Birmingham Metal and Munitions Company Limited part of the Nobel-Dynamite Trust, through Kynoch a forerunner of ICI
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BSA Bantam
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The BSA Bantam is a two-stroke unit construction motorcycle that was produced by the Birmingham Small Arms Company from 1948 until 1971. Exact production figures are unknown, but it was over 250,000, despite the Bantam being considered the archetypal truly British lightweight motorcycle outselling all others, it was in fact based on a German design. The same design went into production in at least two, and perhaps four, other countries. Harley-Davidson started producing their Model 125 in late 1947 and the occupiers of East Germany, in East Germany the machine was made at the original DKW factory by IFA, which later became MZ and Japan also produced copies. The BSA designers made the design an image with right hand side controls. This original Bantam, the D1, was released in October 1948 and it had telescopic forks, a rigid rear end, direct electrics, shovel front-mudguard and fishtail silencer, was available only in mist green and sold for £60 plus tax. Although the frame changed out of recognition, the engine remained a recognizable development of the original for the entire 23 years of production, the engine is a unit construction single cylinder 2 stroke. The barrel is cast iron while the head is alloy, the gearbox was initially three speeds, later versions went to four, fed through a wet clutch. Ignition was of two types, a Lucas battery-powered coil in earlier machines, or a magneto by Wipac. The magneto was on an assembly sitting within the flywheel with its magnet inserts. The early D1s had fish tail styled exhausts but this was replaced with the more conventional cylindrical silencer, high-level exhausts were made for the trials and off-road models, in which the only electrics are the magneto-powered ignition. This listing shows only the variants and most models were available with refinements or in competition form. BSA had used a system for their range of motorcycles. The D175 was marketed as the B175 as BSA struggled against imports in the late 60s to its closure in 1972, the engine size shown is nominal, British motorcycles were made 1 or 3 cc smaller than their tax bracket maximum to allow for re-bores and wear. Pre-1958 had 19 inch wheels and 4.5 inch brakes, the 1958 D5 had 18 inch wheels and 4.5 inch brakes. 1959 D7 and later models had 18 inch wheels and 5 inch brakes front, the D1 125cc was available initially only with a rigid rear suspension, although within three years the range was enhanced to include an optional plunger rear suspension. The front suspension of all D1s possessed no damping and resulted in a bouncy ride quality, D1s were available with a variety of electrical lighting systems. Wipac systems were either in 6v AC or DC
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Harley-Davidson
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Harley-Davidson, Inc. or Harley, is an American motorcycle manufacturer, founded in Milwaukee, Wisconsin in 1903. Harley-Davidson manufactures its motorcycles at factories in York, Pennsylvania, Milwaukee, Wisconsin, Kansas City, Missouri, Manaus, Brazil, Harley drew up plans for a small engine with a displacement of 7.07 cubic inches and four-inch flywheels. The engine was designed for use in a regular pedal-bicycle frame, over the next two years, Harley and his childhood friend Arthur Davidson worked on their motor-bicycle using the northside Milwaukee machine shop at the home of their friend, Henry Melk. It was finished in 1903 with the help of Arthurs brother, Walter Davidson, upon testing their power-cycle, Harley and the Davidson brothers found it unable to climb the hills around Milwaukee without pedal assistance. They quickly wrote off their first motor-bicycle as a learning experiment. Work immediately began on a new and improved second-generation machine and this first real Harley-Davidson motorcycle had a bigger engine of 24.74 cubic inches with 9.75 inches flywheels weighing 28 lb. The machines advanced loop-frame pattern was similar to the 1903 Milwaukee Merkel motorcycle, the bigger engine and loop-frame design took it out of the motorized bicycle category and marked the path to future motorcycle designs. The boys also received help with their bigger engine from outboard motor pioneer Ole Evinrude, the prototype of the new loop-frame Harley-Davidson was assembled in a 10 ft ×15 ft shed in the Davidson family backyard. Most of the parts, however, were made elsewhere. This prototype machine was functional by September 8,1904, when it competed in a Milwaukee motorcycle race held at State Fair Park and it was ridden by Edward Hildebrand and placed fourth. This is the first documented appearance of a Harley-Davidson motorcycle in the historical record, in January 1905, small advertisements were placed in the Automobile and Cycle Trade Journal offering bare Harley-Davidson engines to the do-it-yourself trade. By April, complete motorcycles were in production on a limited basis. That year, the first Harley-Davidson dealer, Carl H. Lang of Chicago, in 1906, Harley and the Davidson brothers built their first factory on Chestnut Street, at the current location of Harley-Davidsons corporate headquarters. The first Juneau Avenue plant was a 40 ft ×60 ft single-story wooden structure, the company produced about 50 motorcycles that year. Harley graduated from the University of Wisconsin–Madison with a degree in mechanical engineering and that year additional factory expansion came with a second floor and later with facings and additions of Milwaukee pale yellow brick. With the new facilities production increased to 150 motorcycles in 1907, the company was officially incorporated that September. They also began selling their motorcycles to police departments around this time, in 1907 William A. Davidson, brother to Arthur and Walter Davidson, quit his job as tool foreman for the Milwaukee Road railroad and joined the Motor Company. Production in 1905 and 1906 were all models with 26.84 cubic inch engines
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Harley-Davidson Hummer
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The Hummer was a motorcycle model manufactured by Harley-Davidson from 1955 to 1959. However, the name Hummer is now used generically to refer to all American-made single-cylinder two-stroke Harley-Davidson motorcycles manufactured from 1948 to 1966. These motorcycles were based on the DKW RT125, the drawings for which were taken from Germany as war reparations after World War II. The RT125 drawings were given to the United Kingdom and the Soviet Union as war reparations, resulting in the BSA Bantam. The Model 125 or S-125 was introduced by Harley-Davidson in 1947 as a 1948 model, the 125 cc two-stroke engine produced three horsepower, which was sent through a three-speed foot-shift transmission. The front suspension used girder forks suspended by rubber bands. Ten thousand Model S-125s were sold during the first seven months of 1947, despite largely being ignored by dealers, the 125 gained a large following among young riders, many of whom would go on to ride larger motorcycles. The rubber-band front suspension was replaced in 1951 by a telescopic fork referred to as Tele-Glide, the Model 165 replaced the S-125 in 1953. The engine was increased in size to 165 cc, the Hummer was added to Harley-Davidsons model line in 1955. It was a basic model using a redesigned B-model engine with the old 125 cc capacity. It was named after Dean Hummer, a Harley dealer in Omaha, the Hummer was as basic as it could have been. It had magneto ignition and was sold without battery, electric horn, turn signals, the Model 165 and the Hummer were both replaced by the Super 10 in 1960. The Super 10 used a 165 cc version of the B-model engine previously used in 125 cc form in the Hummer, the Ranger was an off-road Harley-Davidson motorcycle without lights, made only in 1962. It had an extra-low final-drive ratio of 7.0,1 with neither lighting system nor front fender and it is believed to have been built to consume their supply of 165 cc engines, which would not be needed for their other models. The Pacer was the replacement for the Super-10 and it used the newly enlarged 175 cc B-model engine. In 1963, one year production, the frame of the Pacer was heavily redesigned. The new frame incorporated rear suspension through an L-shaped swingarm that actuated a spring mounted horizontally under the engine, the seat and rear fender were supported on a subframe bolted to the main frame. The Scat was a motorcycle based on the Pacer
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Drum
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The drum is a member of the percussion group of musical instruments. In the Hornbostel-Sachs classification system, it is a membranophone, Drums consist of at least one membrane, called a drumhead or drum skin, that is stretched over a shell and struck, either directly with the players hands, or with a drum stick, to produce sound. There is usually a head on the underside of the drum. Other techniques have been used to cause drums to make sound, Drums are the worlds oldest and most ubiquitous musical instruments, and the basic design has remained virtually unchanged for thousands of years. Drums may be played individually, with the using a single drum. Others are normally played in a set of two or more, all played by the one player, such as drums and timpani. A number of different drums together with form the basic modern drum kit. Drums are usually played by striking with the hand, or with one or two sticks, in many traditional cultures, drums have a symbolic function and are used in religious ceremonies. Drums are often used in therapy, especially hand drums, because of their tactile nature. In popular music and jazz, drums usually refers to a kit or a set of drums. Drums acquired even divine status in places such as Burundi, where the karyenda was a symbol of the power of the king, the shell almost invariably has a circular opening over which the drumhead is stretched, but the shape of the remainder of the shell varies widely. In the western tradition, the most usual shape is a cylinder, although timpani, for example. Other shapes include a design, truncated cones, goblet shaped. Drums with cylindrical shells can be open at one end, or can have two drum heads, single-headed drums typically consist of a skin stretched over an enclosed space, or over one of the ends of a hollow vessel. Drums with two heads covering both ends of a shell often have a small hole somewhat halfway between the two heads, the shell forms a resonating chamber for the resulting sound. Exceptions include the African slit drum, also known as a log drum as it is made from a tree trunk. Drums with two heads can also have a set of wires, called snares, held across the head, top head. The heads tension can be adjusted by loosening or tightening the rods, many such drums have six to ten tension rods
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Guitar
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The guitar is a musical instrument classified as a fretted string instrument with anywhere from four to 18 strings, usually having six. The sound is projected either acoustically, using a wooden or plastic and wood box, or through electrical amplifier. It is typically played by strumming or plucking the strings with the fingers, the guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel strings and distinguished from other chordophones by its construction and tuning. There are three types of modern acoustic guitar, the classical guitar, the steel-string acoustic guitar, and the archtop guitar. The tone of a guitar is produced by the strings vibration, amplified by the hollow body of the guitar. The term finger-picking can also refer to a tradition of folk, blues, bluegrass. The acoustic bass guitar is an instrument that is one octave below a regular guitar. Early amplified guitars employed a body, but a solid wood body was eventually found more suitable during the 1960s and 1970s. As with acoustic guitars, there are a number of types of guitars, including hollowbody guitars, archtop guitars and solid-body guitars. The electric guitar has had a influence on popular culture. The guitar is used in a variety of musical genres worldwide. It is recognized as an instrument in genres such as blues, bluegrass, country, flamenco, folk, jazz, jota, mariachi, metal, punk, reggae, rock, soul. The term is used to refer to a number of chordophones that were developed and used across Europe, beginning in the 12th century and, later, in the Americas. The modern word guitar, and its antecedents, has applied to a wide variety of chordophones since classical times. Many influences are cited as antecedents to the modern guitar, at least two instruments called guitars were in use in Spain by 1200, the guitarra latina and the so-called guitarra morisca. The guitarra morisca had a back, wide fingerboard. The guitarra Latina had a sound hole and a narrower neck. By the 14th century the qualifiers moresca or morisca and latina had been dropped, and it had six courses, lute-like tuning in fourths and a guitar-like body, although early representations reveal an instrument with a sharply cut waist
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Brass instrument
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A brass instrument is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the players lips. Brass instruments are also called labrosones, literally meaning lip-vibrated instruments, there are several factors involved in producing different pitches on a brass instrument. The view of most scholars is that the brass instrument should be defined by the way the sound is made, as above. Thus one finds brass instruments made of wood, like the alphorn, the cornett, the serpent, as valved instruments are predominant among the brasses today, a more thorough discussion of their workings can be found below. The valves are usually piston valves, but can be rotary valves, slide brass instruments use a slide to change the length of tubing. The main instruments in this category are the family, though valve trombones are occasionally used. The trombone familys ancestor, the sackbut, and the folk instrument bazooka are also in the slide family, there are two other families that have, in general, become functionally obsolete for practical purposes. Instruments of both types, however, are used for period-instrument performances of Baroque or Classical pieces. In more modern compositions, they are used for their intonation or tone color. Natural brass instruments only play notes in the harmonic series. These include the bugle and older variants of the trumpet and horn, the trumpet was a natural brass instrument prior to about 1795, and the horn before about 1820. In the 18th century, makers developed interchangeable crooks of different lengths, natural instruments are still played for period performances and some ceremonial functions, and are occasionally found in more modern scores, such as those by Richard Wagner and Richard Strauss. Keyed or Fingered brass instruments used holes along the body of the instrument and these included the cornett, serpent, ophicleide, keyed bugle and keyed trumpet. They are more difficult to play than valved instruments, Brass instruments may also be characterised by two generalizations about geometry of the bore, that is, the tubing between the mouthpiece and the flaring of the tubing into the bell. Those two generalizations are with regard to the degree of taper or conicity of the bore and the diameter of the bore with respect to its length, cylindrical bore brass instruments are generally perceived as having a brighter, more penetrating tone quality compared to conical bore brass instruments. The trumpet, baritone horn and all trombones are cylindrical bore, in particular, the slide design of the trombone necessitates this. Conical bore brass instruments are those in which tubing of constantly increasing diameter predominates, conical bore instruments are generally perceived as having a more mellow tone quality than the cylindrical bore brass instruments. The British brass band group of instruments fall into this category and this includes the flugelhorn, cornet, tenor horn, horn, euphonium and tuba
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Woodwind instrument
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Woodwind instruments are a family of musical instruments within the more general category of wind instruments. There are two types of woodwind instruments, flutes and reed instruments. What differentiates these instruments from other instruments is the way in which they produce their sound. Examples are a saxophone, a bassoon and a piccolo, flutes produce sound by directing a focused stream of air below the edge of a hole in a cylindrical tube. The flute family can be divided into two sub-families, open flutes and closed flutes, to produce a sound with an open flute, the player is required to blow a stream of air across a sharp edge that then splits the airstream. This split airstream then acts upon the air contained within the flutes hollow causing it to vibrate. Examples of open flutes are the flute, panpipes and shakuhachi. Ancient flutes of this variety were often made from sections of plants such as grasses, reeds. Later, flutes were made of such as tin, copper. Modern concert flutes are made of high-grade metal alloys, usually containing nickel, silver, copper. To produce a sound with a flute, the player is required to blow air into a duct. This duct acts as a channel bringing the air to a sharp edge, as with the open flutes, the air is then split, this causes the column of air within the closed flute to vibrate and produce sound. Examples of this type of include the recorder, ocarina. Reed instruments produce sound by focusing air into a mouthpiece which then causes a reed, or reeds, similar to flutes, Reed pipes are also further divided into two types, single reed and double reed. Single-reed woodwinds produce sound by placing a reed onto the opening of a mouthpiece, when air is forced between the reed and the mouthpiece, the reed causes the air column in the instrument to vibrate and produce its unique sound. Single reed instruments include the clarinet, saxophone, and others such as the chalumeau, double-reed instruments use two precisely cut, small pieces of cane bound together at the base. This form of production has been estimated to have originated in the middle to late Neolithic period. The finished, bound reed is inserted into the instrument and vibrates as air is forced between the two pieces and this family of reed pipes is subdivided further into another two sub-families, exposed double reed, and capped double reed instruments
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Violin
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The violin is a wooden string instrument in the violin family. It is the smallest and highest-pitched instrument in the family in regular use, smaller violin-type instruments are known, including the violino piccolo and the kit violin, but these are virtually unused in the 2010s. The violin typically has four strings tuned in fifths, and is most commonly played by drawing a bow across its strings. Violins are important instruments in a variety of musical genres. They are most prominent in the Western classical tradition and in varieties of folk music. They are also used in genres of folk including country music and bluegrass music. Electric violins are used in forms of rock music, further. The violin is sometimes called a fiddle, particularly in Irish traditional music and bluegrass. The violin was first known in 16th-century Italy, with further modifications occurring in the 18th and 19th centuries. In Europe it served as the basis for stringed instruments used in classical music, the viola. According to their reputation, the quality of their sound has defied attempts to explain or equal it, many of these trade instruments were formerly sold by Sears, Roebuck and Co. and other mass merchandisers. A person who makes or repairs violins is called a luthier or violinmaker, the parts of a violin are usually made from different types of wood and on the use of a pickup and an amplifier and speaker). Violins can be strung with gut, Perlon or other synthetic, the earliest stringed instruments were mostly plucked. Similar and variant types were probably disseminated along East-West trading routes from Asia into the Middle East, the first makers of violins probably borrowed from various developments of the Byzantine lira. These included the rebec, the Arabic rebab, the vielle, the earliest pictures of violins, albeit with three strings, are seen in northern Italy around 1530, at around the same time as the words violino and vyollon are seen in Italian and French documents. One of the earliest explicit descriptions of the instrument, including its tuning, is from the Epitome musical by Jambe de Fer, by this time, the violin had already begun to spread throughout Europe. The violin proved very popular, both among street musicians and the nobility, the French king Charles IX ordered Andrea Amati to construct 24 violins for him in 1560, one of these noble instruments, the Charles IX, is the oldest surviving violin. The Messiah or Le Messie made by Antonio Stradivari in 1716 remains pristine and it is now located in the Ashmolean Museum of Oxford
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JPY 408.2 billion (2017)[3]
