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Secret #25 (5 Points)
The incandescent light bulb, incandescent lamp or incandescent light globe is an electric light which produces light with a filament wire heated to a high temperature by an electric current through it, until it glows.
MorterAfeck unlocked this medal 6/25/21.
You unlocked this medal 6/25/21.
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Unlocked by 13,507 users
