爱迪生作文素材

篇一：GRE写作备考素材之爱迪生(一)

如果您想要在GRE写作考试中游刃有余，就一定要在备考中积累很多的写作素材，下面小编就给大家提供一些GRE写作备考素材之爱迪生，供大家参考。

The Edison Company produced over 1,700 movies. Synchronizing movies with the phonograph in 1904, Edison laid the basis for talking pictures. In 1908 his cinemaphone appeared, adjusting film speed to phonograph speed. In 1913 his kinetophone projected talking pictures: the phonograph, behind the screen, was synchronized by ropes and pulleys with the projector. Edison produced several "talkies." Meanwhile, among other inventions, the universal motor, which used alternating or direct current, appeared in 1907; and the electric safety lantern, patented in 1914, greatly reduced casualties among miners. That year Edison invented the telescribe, which combined features of the telephone and dictating phonograph.

During World War I, Edison headed the U.S. Navy Consulting Board and contributed 45 inventions, including substitutes for previously imported

chemicals (especially carbolic acid, or phenol), defensive instruments against U-boats, a ship-telephone system, an underwater searchlight, smoke screen machines, anti-torpedo nets, turbine projectile heads, collision mats,

navigating equipment, and methods of aiming and firing naval guns. After the war he established the Naval Research Laboratory, the only American institution for organized weapons research until World War II.

With Hey Ford and the Firestone Company, Edison organized the Edison Botanic Research Company in 1927 to discover or develop a domestic source of rubber. Some 17,000 different botanical specimens were examined over 4 years in indication of Edison's tenaciousness. By crossbreeding goldeod, he

developed a strain yielding 12 percent latex, and in 1930 he received his last patent, for this process.

To raise money, Edison dramatized himself by careless dress, clowning for reporters, and playing the role of homespun sage with aphorisms like "Genius is 1 percent inspiration and 99 percent perspiration" and "Discovery is not invention." He scoffed at formal education, slept only four hours a night, and often worked 40 or 50 hours straight. As a world symbol of Yankee ingenuity, he looked and acted the part. Edison had more than 10,000 books at home and masses of printed materials at the laboratory. When launching a new project, he wished to avoid others' mistakes and to know everything about a subject. Some 25,000 notebooks contained his research records, ideas, hunches, and mistakes.

http://bailiedu.com

Supposedly, his GREat shortcoming was lack of interest in anything not utilitarian; yet he loved to read Shakespeare and Thomas Paine.

Edison died in West Orange, New Jersey, on October 18, 1931. The laboratory buildings and equipment associated with his career are preserved in GREenfield Village, Detroit, Michigan, thanks to Hey Ford's interest and friendship.以上就是关于GRE写作备考素材之爱迪生的分享，参加GRE考试的考生，在备考GRE作文的时候，可以多积累一些素材，对于提高写作水平会有所帮助的，预祝大家在GRE考试中取得好成绩。

篇二：GRE写作备考素材之爱迪生(二)

如果您想要在GRE写作考试中游刃有余，就一定要在备考中积累很多的写作素材，下面小编就给大家提供一些GRE写作备考素材之爱迪生，供大家参考。

Edison, Thomas (Alva) 1847 -- 1931

Inventor. 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 at 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 the 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 Edison's first invention was an automatic telegraph repeater (circa 1864). His first patent was for 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 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 systems; 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 Edison's carbon telegraph transmitter for Western Union marked a real advance toward making the Bell telephone practical. (Later, Emile

Berliner's 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 talent, 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 Edison's patent and manufactured the mimeograph machine.)

http://bailiedu.com

Edison's most original and lucrative invention, the phonograph, was patented in 1877. From a manually 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 cylindrical shellac records; Berliner invented disk records. Edison's 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 practical 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, profitable.

Prior to Edison's central power station, each user of electricity needed a dy(来自:www.Zw2.cn 爱 作文 网)namo (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 America's electrical 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 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 Sunbury,

Pennsylvania, in 1883, superseded the parallel circuit, used 110 volts, and necessitated high-resistance lamp filaments (metal alloys were later used).In 1883 Edison made a significant discovery in pure science, the Edison effect lectrons flowed from incandescent filaments. With a metal-plate insert, the lamp could serve as a valve, admitting only negative electricity. Although "etheric force" had been recognized in 1875 and the Edison effect was patented in 1883, the phenomenon was little known outside the Edison laboratory. (At this time existence of electrons was not generally accepted.) This "force" underlies radio broadcasting, long-distance telephony, sound pictures, television, electric eyes, x-rays, high-frequency surgery, and electronic musical

instruments. In 1885 Edison patented a method to transmit telegraphic "aerial" signals, which worked over short distances, and later sold this "wireless" patent to Guglielmo Marconi.

http://bailiedu.com

The vast West Orange, New Jersey, factory, which Edison directed from 1887 to 1931, was the world's most complete research laboratory, an antecedent of modern research and development laboratories, with teams of workers

systematically investigating problems. Various inventions included a method to make plate glass, a magnetic ore separator, compressing dies, composition brick, a cement process, an all-concrete house, an electric locomotive (patented 1893), a fluoroscope, a nickel-iron battery, and motion pictures. Edison refused to patent the fluoroscope, so that doctors could use it freely; but he patented the first fluorescent lamp in 1896.

The Edison battery, finally perfected in 1910, was a superior storage battery with an alkaline electrolyte. After 8000 trials Edison remarked, "Well, at least we know 8000 things that don't work." In 1902 he improved the copper oxide battery, which resembled modern dry cells.

Edison's motion picture camera, the kinetograph, could photograph action on 50-foot strips of film, 16 images per foot. A young assistant, in order to make the first Edison movies, in 1893 built a small laboratory called the "Black Maria," shed, painted black inside and out, that revolved on a base to follow the sun and kept the actors illuminated. The kinetoscope projector of 1893 showed the films. The first commercial movie theater, a peepshow, opened in New York in 1884. A coin put into a slot activated the kinetoscope inside the box. Acquiring and improving the projector of Thomas Armat in 1895, Edison marketed it as the Vitascope.

以上就是关于GRE写作备考素材之爱迪生分享，参加GRE考试的考生，在备考GRE作文的时候，可以多积累一些素材，对于提高写作水平会有所帮助的，预祝大家在GRE考试中取得好成绩。

篇三：考研管理类联考综合写作素材之爱迪生测灯泡

考研管理类联考综合写作素材之爱迪生

测灯泡

管理类联考综合写作素材大全内包含非常多的素材，如果能在写作当中适当运用一些素材，必定让你的论文增色很多。

对于素材的选择上面，大家按照类别，挑选出觉得好的，或者自己感兴趣的，复制下来，放在一张纸上，然后背诵。

管理类联考综合写作素材之爱迪生测灯泡

阿普顿是美国普林斯顿大学数学系毕业的高材生，对带他一起工作但没有大学文凭的爱迪生有点瞧不起。有一次，爱迪生让他测算一只梨形灯泡的容积。于是，他拿起灯泡，测出了它的直径高度，然后加以计算。但是灯泡不具有规则形状，它像球形，又不完全是球形;像园柱体，又不完全是园柱体。计算很复杂，即使是近似处理，也很繁琐。

阿普顿画了草图，在好几张白纸上写满了密密麻麻的数据和算式，也没算出来。正忙于实验的爱迪生等了很长时间，也不见阿普顿报告结果，他走过来一看，便忍不住笑了起来，"你还是换种方法算吧!"只见爱迪生略一沉思，快步取来一大杯水，轻轻地往阿普顿刚才反复测算的灯泡里倒满了水，然后把水倒进量筒，几秒钟就量出了水的体积，当然也就等于算出了玻璃灯泡的容积。这时，羞红了脸的阿普顿傻呆呆地站在一旁，恨不得找条地缝钻下去。

凯程教育张老师整理了几个节约时间的准则：一是要早做决定，趁早备考;二是要有计划，按计划前进;三是要跟时间赛跑，争分夺秒。总之，考研是一场“时间战”，谁懂得抓紧时间，利用好时间，谁就是最后的胜利者。

1.制定详细周密的学习计划。

这里所说的计划，不仅仅包括总的复习计划，还应该包括月计划、周计划，甚至是日计划。努力做到这一点是十分困难的，但却是非常必要的。我们要把学习计划精确到每一天，这样才能利用好每一天的时间。当然，总复习计划是从备考的第一天就应该指定的;月计划可以在每一轮复习开始之前，制定未来三个月的学习计划。以此类推，具体到周计划就是要在每个月的月初安排一月四周的学习进程。那么，具体到每一天，可以在每周的星期一安排好周一到周五的学习内容，或者是在每一天晚上做好第二天的学习计划。并且，要在每一天睡觉之前检查一下是否完成当日的学习任务，时时刻刻督促自己按时完成计划。

方法一：规划进度。分别制定总计划、月计划、周计划、日计划学习时间表，并把它们贴在最显眼的地方，时刻提醒自己按计划进行。

方法二：互相监督。和身边的同学一起安排计划复习，互相监督，共同进步。

方法三：定期考核。定期对自己复习情况进行考察，灵活运用笔试、背诵等多种形式。

2.分配好各门课程的复习时间。

一天的时间是有限的，同学们应该按照一定的规律安排每天的学习，使时间得到最佳利用。一般来说上午的头脑清醒、状态良好，有利于背诵记忆。除去午休时间，下午的时间相对会少一些，并且下午人的精神状态会相对低落。晚上相对安静的外部环境和较好的大脑记忆状态，将更有利于知识的理解和记忆。据科学证明，晚上特别是九点左右是一个人记忆力最好的时刻，演员们往往利用这段时间来记忆台词。因此，只要掌握了一天当中每个时段的自然规律，再结合个人的生活学习习惯分配好时间，就能让每一分每一秒都得到最佳利用。方法一：按习惯分配。根据个人生活学习习惯，把专业课和公共课分别安排在一天的不

同时段。比如：把英语复习安排在上午，练习听力、培养语感，做英语试题;把政治安排在下午，政治的掌握相对来说利用的时间较少;把专业课安排在晚上，利用最佳时间来理解和记忆。

方法二：按学习进度分配。考生可以根据个人成绩安排学习，把复习时间向比较欠缺的科目上倾斜，有计划地重点复习某一课程。

方法三：交叉分配。在各门课程学习之间可以相互穿插别的科目的学习，因为长时间接受一种知识信息，容易使大脑产生疲劳。另外，也可以把一周每一天的同一时段安排不同的学习内容。