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The invention of electric light finally made kerone lamps gradually withdraw from the stage of history, making the night clearer and brighter. When it comes to light bulbs, when it comes to Edison, we have to mention that classic famous saying: "Genius is one percent inspiration, plus ninety-nine percent sweat." Just as the development of the electric age has brought electricity into thousands of houholds, the invention of carbon filament bulb has also brought universal influence: people's original sleep habit of "multiple times of sleep" has disappeared, and it has been replaced by a fixed "one-off" sleep of 7 to 8 hours. 14 hours of intermittent sleep has become 8 hours of one-off sleep. In this n, the invention of electric light has indeed squeezed out a lot of time for human beings. Electric light is really one of the greatest achievements of our human beings.
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