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On thomas alva edison in hindi

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Thomas Edison Biography - life, children, story, school, mother, young, information, born, movie, house, time

The American inventor Thomas Edison held hundreds of patents, mostly for electrical devices and electric light and power.

Although the phonograph and the electric light bulb are best known, perhaps his greatest invention was organized research.
Thomas Alva Edison is one of the greatest American inventors who held countless patents, majority of them related to electricity and power. While two of his most famous inventions are the incandescent lamp and the phonograph, arguably the most significant invention of Edison is considered to be organized research.

Early life

Thomas Alva Edison was born in Milan, Ohio, on February 11, 1847, the youngest of Samuel and Nancy Eliot Edison's seven children.

His father worked at different jobs, including as a shopkeeper and shingle maker; his mother was a former teacher.

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Thomas Alva Edison- Extremely Combative ( An Inspirational life in Hindi)


Edison spent short periods of time in school but was mainly tutored by his mother. He also read books from his father's extensive library.

At the age of twelve Edison sold fruit, candy, and newspapers on the Grand Trunk Railroad between Port Huron and Detroit, Michigan.

In 1862, using a small printing press in a baggage car, he wrote and printed the Grand Trunk Herald, which was circulated to four hundred railroad employees.
The kinetograph, his motion picture camera, was able to photograph action on 50-foot strips of film, and produced about sixteen images per foot. A young assistant of Edison built a small laboratory in 1893 called the “Black Maria,” which was substantial in making the first Edison movies. The kinetoscope projector of 1893 finally displayed the films. The earliest commercial movie theater, a peepshow, was established in New York in 1884. After developing and modifying the projector of Thomas Armat in 1895, Edison commercialized it as the “Vitascope”.

That year he became a telegraph operator, taught by the father of a child whose life Edison had saved. Excused from military service because of deafness, he worked at different places before joining Western Union Telegraph Company in Boston in 1868.
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He also continued to read, becoming especially fond of the writings of British scientist Michael Faraday (1791-1867) on the subject of electricity.

First inventions

Edison's first invention was probably an automatic telegraph repeater (1864), which enabled telegraph signals to travel greater distances.

Perhaps the first invention of Edison was a telegraph repeater in 1864 which worked automatically, while his earliest patent was registered for an electric vote recorder. He acquired partnership in a New York electrical company in 1869, where he honed the stock ticker and sold it. With all his money, Edison paid for his own factory in Newark, N.J., where he hired technicians to help him with the inventions. His dream was to create an “invention factory.” Almost 80 “earnest men,” including physicists, mathematicians and chemists, were among his collaborators. “Invention to order” made him good money at this place.

His first patent was for an electric vote counter. In 1869, as a partner in a New York electrical firm, he perfected a machine for telegraphing stock market quotations and sold it. This money, in addition to that from his share of the partnership, provided funds for his own factory in Newark, New Jersey.
To explore incandescence, Edison and his fellows, among them J. P. Morgan, developed the Edison Electric Light Company in 1878. Years later, the company became the General Electric Company. Edison invented the first practical incandescent lamp in 1879. With months of hard work researching metal filaments, Edison and his staff analyzed 6,000 organic fibers around the world and determined that the Japanese bamboo was ideal for mass production. Large scale production of these cheap lamps turned out to be profitable, hence the first fluorescent lamp was patented in 1896.

Edison hired as many as eighty workers, including chemists and mathematicians, to help him with inventions; he wanted an "invention factory."

From 1870 to 1875 Edison invented many telegraphic improvements, including

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transmitters, receivers, 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 twelve typewriters at Newark about 1870.
From 1870 to 1875 Edison devised many telegraphic advances including receivers, transmitters, the duplex, tape and automatic printers. He also collaborated in 1871 with Christopher Sholes, also known as “father of the typewriter,” to ameliorate the typing machine. Edison claimed to have made twelve typewriters at Newark in 1870. As a result, the Remington Company purchased his interests.

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 successful. With the money Edison received from Western Union for his transmitter, he established a factory in Menlo Park, New Jersey.
Edison’s carbon telegraph transmitter for Western Union brought a breakthrough for the creation of the Bell telephone. The money he got from Western Union for the transmitter was spent to establish a factory in Menlo Park, N.J. One more time, he used scientific talent to register over 300 patents in only 6 years. His electric pen (1877) developed stencils to produce copies.

Within six years he had more than three hundred patents. The electric pen (1877) produced stencils to make copies. The A. B. Dick Company licensed Edison's patent and manufactured the first copy machine.

Edison's most original and successful invention, the phonograph, was patented in 1877.

The universal motor, which utilized alternating or direct current, appeared in 1907. The electric safety lantern, patented in 1914, significantly reduced casualties among miners. The same year Edison devised the telescribe, which unified characteristics of the telephone and dictating phonograph.

From an instrument operated by hand that made impressions on metal foil and replayed sounds, it became a motor-driven machine playing soda can-shaped wax records by 1887. By 1890 he had more than eighty patents on it. The Victor Company developed from his patents.
Probably his most impressive invention, the phonograph, was patented in 1877. By 1890 Edison had about 80 patents under his name, and that was pretty much the reason The Victor Company came into being.

Edison's later dictating machine, the Ediphone, used disks.

Electric light

To research incandescent light (glowing with intense heat without burning), Edison and others organized the Edison Electric Light Company in 1878.

Edison presided the U.S. Navy Consulting Board throughout World War I and made 45 more inventions. These inventions included substitutes for antecedently imported chemicals (such as carbolic acid), a ship-telephone system, an underwater searchlight, defensive instruments against U-boats, among others. Later on, Edison launched the Naval Research Laboratory, the eminent American institution for research involving organized weapons.

(It later became the General Electric Company) Edison made the first practical electric light bulb in 1879, and it was patented the following year. Edison and his staff examined six thousand organic fibers from around the world, searching for a material that would glow, but not burn, when electric current passed through it. He found that Japanese bamboo was best.
Edison made an amazing discovery in pure science, termed as the Edison Effect. He discovered in 1883 that electrons flowed from incandescent filaments. The lamp could function as a valve using a metal-plate insert, while taking only negative electricity. A method to transmit telegraphic “aerial” signals over short distances was patented by Edison in 1885. The “wireless” patent was later sold to Guglielmo Marconi.

Mass production soon made the lamps, while low-priced, profitable.

Prior to Edison's central power station, each user of electricity needed a generator, which was inconvenient and expensive. Edison opened the first commercial electric station in London in 1882.

The huge West Orange, N.J., factory was supervised from 1887 to 1931 by Edison. This was probably the world’s most cutting-edge research laboratory, and a forerunner to modern research and development laboratories, with experts systematically investigating and researching for the solution of problems.

In September the Pearl Street Station in New York City marked the beginning of America's electrical age. Within four months the station was providing power to light more than five thousand lamps, and the demand for lamps exceeded supply.
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By 1890 it supplied current to twenty thousand lamps, mainly in office buildings, and to motors, fans, printing presses, and heating appliances. Many towns and cities installed central stations based on this model.
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Increased use of electricity led to numerous improvements in the system.

In 1883 Edison made a significant discovery in pure science, the Edison effect—electrons (particles of an atom with a negative electrical charge) flowed from incandescent conducting threads.

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With a metal plate inserted next to the thread, 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 discovery was little known outside the Edison laboratory. (At this time existence of electrons was not generally accepted) This "force" underlies radio broadcasting, long-distance telephone systems, sound pictures, television, 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. He later sold this "wireless" patent to Guglielmo Marconi (1874-1937).

Creating the modern research laboratory

In 1887 Edison moved his operations to West Orange, New Jersey.

The Edison battery, made perfect in 1910, used an alkaline electrolyte, and proved to be a superb storage device. The copper oxide battery, strikingly similar to modern dry cells, was modified in 1902.

This factory, which Edison directed from 1887 to 1931, was the world's most complete research laboratory, with teams of workers investigating problems. Various inventions included a method to make plate glass, a magnetic ore separator, a cement process, an all-concrete house, an electric locomotive (patented in 1893), a nickel-iron battery, and motion pictures. Edison also developed the fluoroscope (an instrument used to study the inside of the living body by X rays), but he refused to patent it, which allowed doctors to use it freely.
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The Edison battery was perfected in 1910. After eight thousand trials Edison remarked, "Well, at least we know eight thousand things that don't work."

Edison's motion picture camera, the kinetograph, could photograph action on fifty-foot strips of film, sixteen images per foot. In 1893 a young assistant, in order to make the first Edison movies, built a small laboratory called the "Black Maria"—a shed, painted black inside and out, that revolved on a base to follow the sun and keep the actors visible. 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. In 1895 Edison acquired and improved Thomas Armat's projector, marketing it as the Vitascope. The Edison Company produced over seventeen hundred movies. Combining movies with the phonograph in 1904, Edison laid the basis for talking pictures. In 1908 his cinema-phone appeared, adjusting film speed to phonograph speed. In 1913 his kinetophone projected talking pictures: the phonograph, behind the screen, ran in time with the projector through a series of ropes and pulleys.

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Edison produced several "talkies."

Work for the government

During World War I (1914-18) Edison headed the U.S. Navy Consulting Board and contributed forty-five inventions, including substitutes for previously imported chemicals, defensive instruments against U-boats, a ship telephone system, an underwater searchlight, smoke screen machines, antitorpedo nets, navigating equipment, and methods of aiming and firing naval guns.

Edison was born on February 11, 1847 in the historic city of Milan (Ohio). His father was a versatile person and a man-of-all-work, while his mother was a teacher. Edison was mostly homeschooled by his mother. Edison became a salesman of fruit, paper and other goods on the Grand Trunk Railroad at a tender age of 12. With the help of his tiny handpress in a trash car, he wrote and published the Grand Trunk Herald in 1862, which was sent to 400 railroad employees. The same year Edison worked as a telegraph operator, trained by the father of a kid whose life he had saved. Edison was a tramp telegrapher, as he was exempted from military service due to his deafness. He was recruited in 1868 by Western Union Telegraph Company in Boston.

After the war he established the Naval Research Laboratory, the only American organized weapons research institution until World War II (1939-45).

Synthetic rubber

With Henry Ford (1863-1947) and the Firestone Company, Edison organized the Edison Botanic Research Company in 1927 to discover or develop a domestic source of rubber. Some seventeen thousand different plant specimens were examined over four years—an indication of how thorough Edison's research was. He eventually was able to develop a strain yielding twelve percent latex, and in 1930 he received his last patent for this process.

The man himself

To help raise money, Edison called attention to himself by dressing carelessly, clowning for reporters, and making statements such as "Genius is one percent inspiration and ninety-nine percent perspiration," and "Discovery is not invention." He scoffed at formal education, thought four hours of sleep a night was enough, and often worked forty or fifty hours straight, sleeping on a laboratory floor. As a world symbol of American inventiveness, he looked and acted the part. Edison had thousands of books at home and masses of printed materials at the laboratory. When launching a new project, he wished to avoid others' mistakes and tried to learn everything about a subject.

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Some twenty-five thousand notebooks contained his research records, ideas, hunches, and mistakes.

Edison died in West Orange on October 18, 1931. The laboratory buildings and equipment associated with his career are preserved in Greenfield Village, Detroit, Michigan, thanks to Henry Ford's interest and friendship.

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