Besides the electric light, Edison had many other inventions, such as the phonograph. 1877, Edison invented the phenomenon that the telephone transmitter vibrates when talking. 1877 On August 5th, Edison drew the phonograph. In film, Edison invented the movie camera. Edison not only invented many things, but also transformed some things. Like the voting counter, there are ordinary printing machines and mimeographs, electric meters and talking movies, which were invented by Edison.
The original inventor of electric light was David. Many people think that Edison was the original inventor of electric light, which is contrary to people's understanding. The original inventor of electric light was an English chemist named David. In the laboratory, he used platinum wire to electrify and then glow. 18 10 years, he used carbon rods for lighting, which was the earliest prototype of light bulb. Besides David, Swan, an engineer from England, also conducted research and invented the vacuum light bulb in 1878. By 1879, Edison was inspired by the light bulb report and tried many different materials as filaments. Because we successfully found the right company, we put it into production in large quantities.
Edison's life is very brilliant. He has been inventing and starting a business and has made great contributions to the world. At the same time, he is also controversial. For example, he proved that alternating current is dangerous, and even invented the electric chair to shock the condemned man.