Who inventend light bulb?
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Edison
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Copernicus
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Humphry Davy
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Graham Bell
C
Correct answer
Explanation
Humphry Davy invented the first electric light bulb in 1802, using a platinum strip. Thomas Edison later developed the first commercially practical incandescent bulb in 1879 with a carbon filament. The question tests knowledge of the actual inventor versus the popular improver.