Development history
From 65438 to 0809, Sir humphry davy, a professor at the Royal Academy (Faraday's teacher), made the world's first arc lamp with 2000 batteries and two carbon rods.
However, the light generated by this lamp is too strong, so it can only be installed in streets or squares, and ordinary families can't use it.
Numerous scientists have racked their brains to make a cheap and durable household electric light.
The light bulb was invented by Gerber in 1854. Gerber is a German watchmaker who immigrated to America. He is also a member of the list of tragic inventors because these people don't know how to make their inventions public. Comrade Edison is completely different. About 20 years after Gaubert, he invented a similar light bulb.
The swan, which made the light bulb in 1860 and perfected it in 1878, at least later became Edison's business partner. On the contrary, it was not until the eve of Gerber's death that he won the legal recognition of Edison, and Edison immediately bought Gerber's patent right from his poor widow.