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arc light

Also, arc lamp. a lamp in which the light source is a high-intensity electric arc either between carbon rods in air or between metal electrodes in a xenon gas atmosphere enclosed in a quartz bulb.
the light produced by such a lamp.
Compare carbon arc, xenon arc.
Origin of arc light
An Americanism dating back to 1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for arc lamp
Historical Examples
  • To illustrate this, let us take an arc lamp designed to use a 50-volt current.

    Electricity for Boys J. S. Zerbe
  • The point between reality and unreality is the arc lamp in the street.

    Fantazius Mallare Ben Hecht
  • The arc lamp has shone like a sun to-day over a happy company.

    Farthest North Fridtjof Nansen
  • The oil lamp had its color; the open burner gas flame its color, the incandescent lamp its color, and the arc lamp its color.

    Color Value C. R. Clifford
  • The bulb containing the highly heated carbon vapour would conduct the current as an arc lamp does.

  • This is simply an arc lamp with reflectors behind it and lenses in front of it.

  • He touched the photograph she had given him, and held it up as he passed under an arc lamp to be sure of it.

    The Main Chance Meredith Nicholson
  • The arc lamp of the fore-mast, always ready to be used for night work, had been run up and switched on.

    The Beach of Dreams H. De Vere Stacpoole
  • The policeman suddenly looming up under the arc lamp proved to be his savior.

    The Million Dollar Mystery Harold MacGrath
  • The arc lamp, on the pole near the tool house, was a blurred circle of light.

    Calumet 'K' Samuel Merwin
British Dictionary definitions for arc lamp

arc light

a light source in which an arc between two electrodes, usually carbon, produces intense white illumination Also called arc lamp
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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arc lamp in Science
arc lamp  
An electric light in which a current produces light when an arc traverses the gap between two incandescent electrodes in a container filled with a gas, such as xenon. The two electrodes are usually made of carbon and are eventually vaporized by the heat they generate. Arc lamps are used to produce intense light (as in spotlights) and to produce heat for welding.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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