Edison's legendary life
Speaking of Edison, people will think of the electric light bulb. On October 21, 1879, in Edison's laboratory, the world's first electric light bulb was successfully produced, which lasted for about 13 hours. However, in 1854, Goebbels, an American, used carbonized bamboo wire, placed in a vacuum glass bottle and energized to light up for 400 hours, which is the earliest successful record of the bulb experiment. Unfortunately, Goebbels didn't patent his design in time. In 1874, two Canadian electricians invented the idea of adding nitrogen to glass bubbles to make electrically charged carbon filaments glow. Unfortunately, they didn't have the money to continue their research and sold the patent to Edison. So in the United States, Edison didn't patent the light bulb at first, and he fought lawsuits for many years.
