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23 Aralık 2008 14:35   |   Mesaj #1   |   
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Electric light
After many experiments with platinum and other metal filaments, Edison returned to a carbon filament. The first successful test was on October 22, 1879, and lasted 40 hours. Edison continued to improve this design and by November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using "a carbon filament or strip coiled and connected to platina contact wires". Although the patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways", it was not until several months after the patent was granted that Edison and his team discovered a carbonized bamboo filament that could last over 1,200 hours.
Edison allegedly bought light bulb U.S. patent 181,613 of Henry Woodward that was issued August 29, 1876 and obtained an exclusive license to Woodward's Canadian patent. These patents covered a carbon rod in a nitrogen filled glass cylinder, and differed substantially from the first commercially practical bulb invented by Edison.[citation needed]
In 1878, Edison formed the Edison Electric Light Company in New York City with several financiers, including J. P. Morgan and the members of the Vanderbilt family. Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. It was during this time that he said: "We will make electricity so cheap that only the rich will burn candles."
George Westinghouse's company bought Philip Diehl's competing induction lamp patent rights (1882) for $25,000, forcing the holders of the Edison patent to charge a more reasonable rate for the use of the Edison patent rights and lowering the price of the electric lamp.
On October 8, 1883, the U.S. patent office ruled that Edison's patent was based on the work of William Sawyer and was therefore invalid. Litigation continued for nearly six years, until October 6, 1889, when a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance" was valid. To avoid a possible court battle with Joseph Swan, whose British patent had been awarded a year before Edison's, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain.
Mahen Theatre in Brno in what is now the Czech Republic, was the first public building in the world to use Edison's electric lamps, with the installation supervised by Edison's assistant in the invention of the lamp, Francis Jehl.

Electric power distribution
Edison patented an electric distribution system in 1880, which was essential to capitalize on the invention of the electric lamp. On December 17, 1880, Edison founded the Edison Electric Illuminating Company. The company established the first investor-owned electric utility in 1882 on Pearl Street Station, New York City. It was on September 4, 1882, that Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts direct current (DC) to 59 customers in lower Manhattan.
Earlier in the year, in January 1882 he had switched on the first steam generating power station at Holborn Viaduct in London. The DC supply system provided electricity supplies to street lamps and several private dwellings within a short distance of the station. On January 19, 1883, the first standardized incandescent electric lighting system employing overhead wires began service in Roselle, New Jersey.
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Thomas Edison

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Thomas Alva Edison
225px Thomas Edison2
"Genius is one percent inspiration, ninety-nine percent perspiration."

BornFebruary 11, 128px Thomas Alva Edison Signaturesvg

Birthplace of Thomas Edison


220px Edison 07 04 2008 023B413B46PM altered 2 PsCSJPEGo10
Historical marker of Edison's birthplace in Milan, Ohio


Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor, scientist and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. Dubbed "The Wizard of Menlo Park" (now Edison, New Jersey) by a newspaper reporter, he was one of the first inventors to apply the principles of mass production and large teamwork to the process of invention, and therefore is often credited with the creation of the first industrial research laboratory.
Edison is considered one of the most prolific inventors in history, holding 1,093 U.S. patents in his name, as well as many patents in the United Kingdom, France, and Germany. He is credited with numerous inventions that contributed to mass communication and, in particular, telecommunications. His advanced work in these fields was an outgrowth of his early career as a telegraph operator. Edison originated the concept and implementation of electric-power generation and distribution to homes, businesses, and factories – a crucial development in the modern industrialized world. His first power station was on Manhattan Island, New York.



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11 Nisan 2010 16:41   |   Mesaj #2   |   
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Thomas Edison

From Wikipedia, the free encyclopedia



Thomas Alva Edison
225px Thomas Edison2
"Genius is one percent inspiration, ninety-nine percent perspiration."

BornFebruary 11, 128px Thomas Alva Edison Signaturesvg

Birthplace of Thomas Edison


220px Edison 07 04 2008 023B413B46PM altered 2 PsCSJPEGo10
Historical marker of Edison's birthplace in Milan, Ohio


Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor, scientist and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. Dubbed "The Wizard of Menlo Park" (now Edison, New Jersey) by a newspaper reporter, he was one of the first inventors to apply the principles of mass production and large teamwork to the process of invention, and therefore is often credited with the creation of the first industrial research laboratory.
Edison is considered one of the most prolific inventors in history, holding 1,093 U.S. patents in his name, as well as many patents in the United Kingdom, France, and Germany. He is credited with numerous inventions that contributed to mass communication and, in particular, telecommunications. His advanced work in these fields was an outgrowth of his early career as a telegraph operator. Edison originated the concept and implementation of electric-power generation and distribution to homes, businesses, and factories – a crucial development in the modern industrialized world. His first power station was on Manhattan Island, New York.



Devamı İçin Lütfen Tıklayınız >>> Thomas Edison - Wikipedia, the free encyclopedia
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The Eniqmatic
12 Mayıs 2011 21:04   |   Mesaj #3   |   
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Thomas Alva Edison, Milan, Ohio, was born. Seven brothers are 7.si. His father, Samuel "The Iron Shovel" Edison, Jr.. (1804-1896) (Canada), mom Nancy Matthews Elliott (1810-1871) stop. He is thought to be Dutch. at the age of seven with her family in Michigan and moved to Port Huron'a primary education began here. But about 4 months after the start of the school was removed because of the slowness of perception. [5] Meanwhile, the effects of their home set up a chemistry lab. In particular chemistry experiments and research to achieve an electrical current, he was attracted Volta containers , a telegraph instrument on its own after a while has learned the alphabet and Morse. In those days his ears as a result of a severe illness was difficult to hear. 12 years old and the fruit sells magazines on a train, on the one hand is placed on the wagon of the train load of a small weekly newspaper with a printing machine basıyordu. But within a day of chemicals in the se
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