1 The inventor of the electric light was actually as early as 1801, a British chemist named David completed the electroluminescence of platinum wire, and 9 years later, he invented the electric candle, which was completed by using the arc between two carbon rods. lighting. Of course, according to the lighting logic of "light bulb", this is not really a light bulb. So we pulled the time line to 1854. American scientist Goebbels used a carbonized bamboo filament and placed it in a vacuum glass bottle to energize light. At that time, the light bulb in Goebbels' experiment could last for 400 hours. This is the first real light bulb in history, but Goebbels did not apply for a patent at the time. In 1874, two electricians in Canada invented a technology. They filled a glass bubble with nitrogen gas to emit light with an electrified carbon rod, which was equivalent to taking Goebbels' technology one step further. As expected, these two will be the first inventors of the light bulb, but unfortunately, they lacked follow-up funds at that time, that is, they had no money, and doing scientific research itself is a super expensive thing, so they are in In 1875 ------------- sold the technology to Edison as we know it.
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