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incandescent lamp |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.02 sec. |
incandescent lampAny of various devices that produce light by heating a suitable material to a high temperature. In an electric incandescent lamp, or lightbulb, a filament is enclosed in a glass shell that is either evacuated or filled with an inert gas. The filament gives off light when heated by an electric current. The first practical electric incandescent lamps were independently produced in the late 1870s by Joseph Swan and Thomas Alva Edison. Edison has received the major credit because of his development of the power lines and other equipment needed for a lighting system. Inefficient in comparison with fluorescent lamps and electric discharge lamps, incandescent lighting is today reserved mainly for domestic use. See also halogen lamp. incandescent lamp a source of light that contains a heated solid, such as an electrically heated filament incandescent lamp [‚in·kən′des·ənt ′lamp] (electricity) An electric lamp that produces light when a metallic filament is heated white-hot in a vacuum by passing an electric current through the filament. Also known as filament lamp; light bulb. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| It is so small that the electric current of a single incandescent lamp is greater 500,000,000 times. |
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