For the question of "who invented the light bulb", many people will say Edison's name without thinking, in most people's cognition, Edison is the handsome man who invented the light bulb. However, when the truth is revealed, you may be shocked, and if you don't believe it, take a look.
Who invented the light bulb

The inventor of the world's first light bulb: Henri Goebbels.
The light bulb, a lighting source that emits light through electricity, was invented by Henry Goebbels in 1854, decades before Edison's electric lamp.
In 1854, Henry Goebbels used a carbonized bamboo wire and placed it under a vacuum glass bottle to energize and emit light. Today, his invention was the world's first incandescent lamp with practical utility, and the bulbs tested at the time lasted 400 hours, but the design patent was not immediately applied.
Edison invented with the light bulb
The great inventor Edison simply found the right material and invented the more practical incandescent lamp, or more precisely, Edison invented the light bulb that could be applied to life.
On October 21, 1879, Edison was in the laboratory, after thousands of experiments, and finally used carbonized coiled cotton thread as a filament, successfully manufacturing the world's first light bulb. The light emitted by this bulb is comparable to 10 kerosene lamps, allowing people to see the world in the dark.
Before that, though, there were already people around the world studying and inventing similar things. In 1801, the British chemist David completed the platinum wire electroluminescence, and 9 years later, he invented the electric candle, using the arc between two carbon rods to achieve illumination. Although this is not a light bulb in the true sense of the word, it has taken a big step forward in the pace of human exploration of the light in the night.
In 1854, the American scientist Goebbels used a carbonized bamboo wire, placed in a vacuum glass bottle to energize the light, when the bulb of Goebbels experiment, can continuously emit light for about 400 hours, which is the world's first real light bulb, 25 years earlier than the electric light bulb invented by Edison.
In 1874, two Canadian electricians invented a technique that filled a glass bubble with nitrogen to glow with an energized carbon rod, taking Goebbels's technology a big step further.
Due to insufficient scientific research funds, the two sold the technology to Edison in 1875, and after getting the technology, Edison began to study the light bulb, and as early as 1878, the Englishman Wilson had completed the research of "carbon wire light bulb under vacuum" and applied for an invention patent.
So, the inventor of the world's first light bulb, in any case, could not be Edison, after all, his pace was decades late compared to the first person to invent the technology.
But Edison pushed the light bulb to every home, bringing light in the darkness to mankind, and his contribution to mankind was enormous and indelible.
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