close illuminated vintage hanging light bulb over dark background |
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navigate by keyword : electric light lamp bulb electrical component common artificial lighting modern incandescent consists coiled filament tungsten globular glass chamber inert gas argon bulbs energy heat illuminated vintage hanging dark background |
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An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. In its modern form, the incandescent light bulb consists of a coiled filament of tungsten sealed in a globular glass chamber, either a vacuum or full of an inert gas such as argon. Incandescent bulbs are highly inefficient, in that just 2â5% of the energy consumed is emitted as visible, usable light. The remaining 95% is lost as heat. |
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