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Feet Forward Motorcycle
A feet first (FF) motorcycle is a class of motorcycle design which positions the rider with their feet ahead, like a car, rather than below and astride, as with conventional bikes. As there are other types of motorcycle (e.g. Chopper (motorcycle), choppers) that have a 'feet forward' position, an alternative term sometimes used is advanced single track vehicle. The name "feet first" (also referred to as "feet forward") was first used by Royce Creasey''Hi-tech'', R. Creasey, Bike Magazine October 1979. History Designers have experimented with the feet forward riding position since the early days of motorcycling. In 1909 P.G Tacchi designed a four-cylinder machine with a 700 cc 'L' head air-cooled engine, an enclosed shaft drive and a bucket seat. The machine was known as a Wilkinson TMC, TAC-Wilkinson, and was manufactured by the Wilkinson Sword, Wilkinson Sword Company''Motor Cycles - a historical survey'' by C.F Caunter, Her Majesty's Stationery Office, London, 1982 Ten ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quasar Motorcycle 1976 Arp
A quasar is an extremely Luminosity, luminous active galactic nucleus (AGN). It is pronounced , and sometimes known as a quasi-stellar object, abbreviated QSO. This emission from a galaxy nucleus is powered by a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc. Gas in the disc falling towards the black hole heats up because of friction and releases energy in the form of electromagnetic radiation. The radiant energy of quasars is enormous; the most powerful quasars have luminosity, luminosities thousands of times greater than that of a galaxy such as the Milky Way. Usually, quasars are categorized as a subclass of the more general category of AGN. The redshifts of quasars are of Expansion of the universe, cosmological origin. The term originated as a Contraction (grammar), contraction of "quasi-stellar ''[star-like]'' radio source"—because quasars were first identified during the 1950s as sour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
