The light bulb was invented by Henry Goebbels in 1854. It uses carbonized bamboo filaments and puts them under a vacuum glass bottle for 400 hours. Unfortunately, he didn't apply for a patent in time. In 1880, Edison made a bamboo filament lamp that could be lit continuously for 1200 hours. 1854 In the United States, a watchmaker named Henry Goebbels put a carbonized bamboo wire into a vacuum glass bottle and electrified it for 400 hours, thus the world's first light bulb was born. However, Henry Goebbels did not apply for a patent in time.
Joseph swan, another British electrical engineer, after nearly 30 years' research, made a vacuum bulb with electricity and light from carbon wire in 1878+02, and applied for a patent. The report about the swan's light bulb gave Edison a great inspiration.
1879 10, Edison made an incandescent light bulb with carbon fiber as the filament, which is called "carbon cotton filament incandescent lamp". In order to win the right to invent the electric light, Swan took Edison to court in England, but later they settled out of court and set up a joint company in England. Finally, Swan sold all his rights and patents to Edison.
Because Henry Goebbels invented the carbon filament incandescent lamp as early as 1854, the US Patent Office considered Edison's invention invalid. Finally, Edison bought the patent from Henry Goebbels' widow and got the patent of carbon filament incandescent lamp.
Edison and his team spread electric light to thousands of households, greatly improving people's lifestyle. Edison became a recognized inventor of electric light.
At first, the light bulb was an arc lamp consisting of 2000 batteries and two carbon rods. But its light is too strong to be used at home. Edison experimented with 1600 kinds of materials. 1880, Edison's carbonized bamboo filament bulb was successfully maintained in the laboratory for 1200 hours. The incandescent lamp invented by Edison is very popular with the public because of its high quality and low price. Until 1904, General Electric invented the tungsten lamp, which was three times stronger than the bamboo filament lamp. This kind of black incandescent lamp has been used since 1907. Therefore, the light bulb was first invented by Henry Goebbels, and Edison later invented and improved the incandescent lamp.