The electric light 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. He was neither the first nor the only person trying to invent the incandescent light bulb.
Edison is often credited with the invention because his version had an effective incandescent material, a higher vacuum than others and power consumption were economically feasible.
In 1802, Humphry Davy invented the first electric light. His invention was known as the Electric Arc lamp, but it didn’t produce light for long and was much too bright for practical use.
Over the next seven decades, other inventors also created “light bulbs” but no designs emerged for commerical application. Either the designs were efficient but cost was impractical or cost was less but design was impractical.
In 1850 an English physicist named Joseph Wilson Swan created a “light bulb” by enclosing carbonized paper filaments in an evacuated glass bulb. And by 1860 he had a working prototype, but the lack of a good vacuum and an adequate supply of electricity resulted in a bulb whose lifetime was much too short to be considered an effective producer of light.
In 1878, Thomas Edison began serious research into developing a practical incandescent lamp and on October 14, 1878, Edison filed his first patent application for “Improvement In Electric Lights”. However, he continued to test several types of material to improve upon his original design.
Later Edison and his team discovered that a carbonized bamboo filament could last over 1200 hours. This discovery marked the beginning of commercially manufactured light bulbs and in 1880, Thomas Edison’s company, Edison Electric Light Company began marketing its new product
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