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How did Thomas Edison invent the light bulb?

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This is an early sketch from Thomas Edison of his light bulb. ... Continuing to improve his design, by November 1879, he filed for a U.S. patent for an electric lamp using “a carbon filament or strip coiled and connected … to platina contact wires”. The filament was made from a piece of carbonized thread. read more

Though Thomas Edison is usually credited with the invention of the light bulb, the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology. Many other notable figures are also remembered for their work with electric batteries, lamps and the creation of the first incandescent bulbs. read more

In his 84 years, Thomas Edison acquired a record number of 1,093 patents (singly or jointly) and was the driving force behind such innovations as the phonograph, the incandescent light bulb and one of the earliest motion picture cameras. read more

Thomas Edison's first successful light bulb model, used in public demonstration at Menlo Park, December 1879 In 1878, Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil based lighting. read more

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