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Filament
Dec 26, 2018

Filaments, bulbs or high temperature resistant wires in tubes, mostly fine tungsten wires, also useful as bismuth or alloys thereof. When energized, they can directly emit light, generate heat, or emit electrons, ultraviolet rays, form high-energy electric fields or generate high-energy rays. A substance, a rare gas, or a plasma is formed to generate visible light of various colors. The earliest incandescent filament was invented by Edison. After power-on, the electrical energy is converted into pure electrical resistance, which is converted into light energy by internal energy, and is mainly converted into light energy.

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