Item 74872 - Coiled tungsten filament bulb, ca. 1915

Item 74872 - Coiled tungsten filament bulb, ca. 1915
Contributed by Maine Historical Society
Item 74872
Coiled tungsten filament bulb, ca. 1915
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Tungsten filaments became the standard for incandescent light bulbs. Tightly coiling the filaments as in this bulb extended the life of the bulb.

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