Incandescence Lamp
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“Incandescence lamps operate essentially on the principle...[that] the current being sent through some substance that, because of its high resistance, becomes intensely heated and brilliantly incandescent. The only suitable substance known for such a resistance filament is carbon, which, carefully prepared and bent into a loop, is enclosed in a glass bulb from which the air is exhausted to prevent oxidation, i.e., combustion.” -Avery 1895
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LampsSource
Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 543
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