Which is the first filament made by humans and who made?
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We all learned in our history classes that Thomas Edison invented the light bulb in 1879 and that the first successful filament was a carbonized piece of cotton thread that burned for 13.5 hours.
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Who Invented the Twisty Little Bit of Wire Inside the Light Bulb? We all learned in our history classes that Thomas Edison invented the light bulb in 1879 and that the first successful filament was a carbonized piece of cotton thread that burned for 13.5 hours
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