Edison invented the light bulb.

Edison became a household name because he invented the electric light bulb. Not only that, he also invented the camera and phonograph and became the originator of the film industry. Edison invented thousands of modern things in his life. He is a great man of this era, but is the real history like this? number

Edison only owned the patents of these inventions, and the electric light was not the first one he invented. What the hell is going on?

According to the story of Edison's invention of electric light, Edison stayed in the laboratory for a day. He did thousands of experiments and experimented with 1600 kinds of materials. Finally, it was not until 65,438+0,879 that carbonized cotton yarn was found to be the best material for filament, and this material was invented and patented by Swan in Britain as early as 65,438+0,954.

But as early as 1854, American Henry Goebbels put a carbonized bamboo filament in a vacuum glass bottle and kept it illuminated for 400 hours, but he didn't apply for a patent.

1874, two electrical technicians in Canada invented a technology: filling nitrogen into glass bubbles to make them glow together with charged carbon rods.

But they have no money and can't do it anymore. Then Edison bought the patent.

Just one year before Edison "invented" the electric light, 1978, the Englishman Swan also completed the "light bulb powered by carbon wire in vacuum" and applied for a British patent, and set up a company to promote the electric light in Britain.

So when Edison promoted his electric light in Britain, Swan sued Edison for infringement and Edison had to withdraw from the British market. Then Edison bought Swan's patent with a large sum of money, so that no one would know the name of Swan's previous succession. Edison also spent a large sum of money to promote electric light all over the world and tell the story of his invention, so Edison became the inventor of electric light.

In fact, Edison only improved the electric light. Why did he say that he contributed a lot to the electric light? Because he not only invented the power supply equipment suitable for the city, but also promoted electric lights to the whole world with advertisements.

In fact, Edison is the general manager of a company. He used a lot of money to dig up talented inventors and patents. Then Edison has the reputation of being the first inventor of mankind. This is the power of capital. Edison is not so much an inventor as a brand.