新GRE写作名人素材库精选整合.doc
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1、新GRE写作名人素材库精选整合 平时注意积累素材,多收集一些新GRE写作论据论证例子,才有机会GRE写作中拿高分哦,我们一起来看看吧,下面就和大家分享,来欣赏一下吧。新GRE写作名人素材库:爱迪生Edison, Thomas (Alva) 1847 - 1931Inventor. Born February 11, 1847 in Milan, Ohio. His father was a jack-of-all-trades, his mother a former teacher. Edison spent three months in school, then was taught a
2、t home by his mother. At the age of 12 he sold fruit, candy, and papers on the Grand Trunk Railroad. In 1862, using his small handpress in a baggage car, he wrote and printed the Grand Trunk Herald, which was circulated to 400 railroad employees. That year he became a telegraph operator, taught by t
3、he father of a child whose life Edison had saved. Exempt from military service because of deafness, he was a tramp telegrapher until he joined Western Union Telegraph Company in Boston in 1868.Probably Edisons first invention was an automatic telegraph repeater (circa 1864). His first patent was for
4、 an electric vote recorder. In 1869, as a partner in a New York electrical firm, he perfected the stock ticker and sold it. This money, in addition to that from his share of the partnership, provided funds for his own factory in Newark, N.J. Edison hired technicians to collaborate on inventions; he
5、wanted an invention factory. As many as 80 earnest men, including chemists, physicists, and mathematicians, were on his staff. Invention to order became very profitable.From 1870 to 1875, Edison invented many telegraphic improvements: transmitters; receivers; the duplex, quadruplex, and sextuplex sy
6、stems; and automatic printers and tape. He worked with Christopher Sholes, father of the typewriter, in 1871 to improve the typing machine. Edison claimed he made 12 typewriters at Newark about 1870. The Remington Company bought his interests.In 1876 Edisons carbon telegraph transmitter for Western
7、Union marked a real advance toward making the Bell telephone practical. (Later, Emile Berliners transmitter was granted patent priority by the courts.) With the money Edison received from Western Union for his transmitter, he established a factory in Menlo Park, N.J. Again he pooled scientific talen
8、t, and within six years he had more than 300 patents. The electric pen (1877) produced stencils to make copies. (The A. B. Dick Company licensed Edisons patent and manufactured the mimeograph machine.)Edisons most original and lucrative invention, the phonograph, was patented in 1877. From a manuall
9、y operated instrument making impressions on metal foil and replaying sounds, it became a motor-driven machine playing cylindrical wax records by 1887. By 1890 he had more than 80 patents on it. The Victor Company developed from his patents. (Alexander Graham Bell impressed sound tracks on cylindrica
10、l shellac records; Berliner invented disk records. Edisons later dictating machine, the Ediphone, used disks.)To research incandescence, Edison and others ncluding J. P. Morgan rganized the Edison Electric Light Company in 1878. (Later it became the General Electric Company.) Edison made the first p
11、ractical incandescent lamp in 1879, and it was patented the following year. After months of testing metal filaments, Edison and his staff examined 6,000 organic fibers from around the world and decided that Japanese bamboo was best. Mass production soon made the lamps, although low-priced, profitabl
12、e.Prior to Edisons central power station, each user of electricity needed a dynamo (generator), which was inconvenient and expensive. Edison opened the first commercial electric station in London in 1882; in September the Pearl Street Station in New York City marked the beginning of Americas electri
13、cal age. Within 4 months the station was lighting more than 5,000 lamps for 230 customers, and the demand for lamps exceeded supply. By 1890 it supplied current to 20,000 lamps, mainly in office buildings, and to motors, fans, printing presses, and heating appliances. Many towns and cities installed
14、 central stations. Increased use of electricity led to Edison-base sockets, junction boxes, safety fuses, underground conduits, meters, and the three-wire system. Jumbo dynamos, with drum-wound armatures, could maintain 110 volts with 90 percent efficiency. The three-wire system, first installed in
15、Sunbury, Pennsylvania, in 1883, superseded the parallel circuit, used 110 volts, and necessitated high-resistance lamp filaments (metal alloys were later used).新GRE写作名人素材库:爱因斯坦Einstein Albert 18791955Physicist. Born March 14, 1879, in Ulm, Germany. Einstein grew up in Munich, where his father, Herma
16、nn, owned a small electrochemical factory. The strict discipline of German schools did not appeal to the young Einstein, who was a poor student but conducted his own studies of philosophy, math, and science. In 1895, after Hermann抯 busines failed, the Einstein family moved to Milan, Italy. Albert st
17、ayed behind to continue his studies, but soon left school with no diploma to rejoin his family. He continued his independent studies, teaching himself calculus and higher scientific principles. After failing his first entrance examination to the prestigious Swiss Federal Institute of Technology in Z
18、urich, Einstein gained admittance in 1896 and began his four years studying physics and mathematics.After his graduation in 1900, Einstein became a naturalized Swiss citizen in 1901 and got a job as a technical assistant at the Swiss patent office in Bern. In 1903, he married his university sweethea
19、rt, Mileva Maric. While employed at the patent office, Einstein continued his own investigations in theoretical physics. In 1905, he published an article entitled New Determination of Molecular Dimensions?in the well-known German physics monthly Annalen der Physik. The article earned him a Ph.D. fro
20、m the University of Zurich. That same year, Einstein published four other papers in Annalen, including his revolutionary theory that light exists in both waves and particles. His major proposal of 1905, however, was his special theory of relativity, which dismissed the traditional notion that time a
21、nd space were absolute concepts, suggesting instead that both time and space vary with circumstances.Einstein worked as a professor of physics at universities in Prague and Zurich before moving to Berlin in 1914 with his wife and two sons, Hans Albert and Eduard. He took a post at the Prussian Acade
22、my of Sciences, where he could continue his research and lecture at the University of Berlin. Unhappy with life in Berlin, his wife Mileva returned to Switzerland with their sons near the beginning of World World I; their separation led to a divorce in 1919. Einstein married his second cousin, Elsa
23、Lowenthal, later that year.In 1915, Einstein perfected his general theory of relativity, summing up his theory with the mathematical equation E=mc?(energy equals mass times the speed of light squared). His findings on relativity were published in The Principle of Relativity, Sidelights on Relativity
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