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The electric light, one of the everyday conveniences that most affects our lives, was not “invented” in the traditional sense in 1879 by Thomas Alva Edison, although he could be said to have created the first commercially practical incandescent light...

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The electric light, one of the everyday conveniences that most affects our lives, was not “invented” in the traditional sense in 1879 by Thomas Alva Edison, although he could be said to have created the first commercially practical incandescent light...

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He was neither the first nor the only person trying to invent an incandescent light bulb. In fact, some historians claim there were over 20 inventors of incandescent lamps prior to Edison’s version (example Tesla) 

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He was neither the first nor the only person trying to invent an incandescent light bulb. In fact, some historians claim there were over 20 inventors of incandescent lamps prior to Edison’s version (example Tesla) 

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However, Edison is often credited with the invention because his version was able to outstrip the earlier versions, because of a combination of three factors: an effective incandescent material, a higher vacum than others were able to achieve and a high resistance that made power distribution from a centralized source economically viable.

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However, Edison is often credited with the invention because his version was able to outstrip the earlier versions, because of a combination of three factors: an effective incandescent material, a higher vacum than others were able to achieve and a high resistance that made power distribution from a centralized source economically viable.

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He continued to test several types of material for metal filaments to improve upon his original design and by Nov 4, 1879, he filed another U.S. patent for an electric lamp using "a carbon filament or strip coiled and connected ... to platen contact wires."

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He continued to test several types of material for metal filaments to improve upon his original design and by Nov 4, 1879, he filed another U.S. patent for an electric lamp using "a carbon filament or strip coiled and connected ... to platen contact wires."

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This discovery marked the beginning of commercially manufactured light bulbs and in 1880, Thomas Edison’s company, Edison Electric Light Company be again marketing its new product.

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This discovery marked the beginning of commercially manufactured light bulbs and in 1880, Thomas Edison’s company, Edison Electric Light Company be again marketing its new product.