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Incandescent light bulb with a medium-sized E27 (Edison 27 millimeter) male screw base - image

Jan 1, 1802 to Present

U.S. - UK - Belgium - France - Canada - Germany - Hungary

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Incandescent light bulb

An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light (incandescence). The filament is protected from oxidation with a glass or fused quartz bulb that is filled with inert gas or a vacuum. In a halogen lamp, filament evaporation is slowed by a chemical process that redeposits metal vapor onto the filament, thereby extending its life.


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