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electric discharge lamp

   Also found in: Wikipedia 0.03 sec.

electric discharge lamp

 or vapor lamp

Lighting device consisting of a transparent container within which a gas is energized by an applied voltage and made to glow. After practical generators were devised in the 19th century, many experimenters applied electric power to tubes of gas. From c. 1900, electric discharge lamps were in use in Europe and the U.S. Fluorescent, neon, mercury, sodium, and metal-halide lamps are of the electric discharge variety.
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Special lamps: halogen tungsten lamp, high pressure sodium lamp, high pressure mercury lamp, metal halide lamp, photoflash lamp, spotlight, electric discharge lamp, arc lamp and ultraviolet and infrared ray lamps etc.
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