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arc +‎ light


arclight (plural arclights)

  1. A lamp that produces light by generating an electric arc across an enclosed gas.
    • 1987, Martin Gilbert, The Holocaust
      With one, last desperate lurch, the lorry cleared the tracks, disappearing out of the arclights, into the darkness; and then there was silence...
    • 1998, Patrick Robinson, Nimitz Class
      All five had seen the four wooden targets, thirty feet above their heads, holding the great submarine in place, stark against the glare of the arclight...
    • 2000, James Burke, The Knowledge Web
      In 1809 Humphry Davy had made the first arclight by attaching a charcoal rod to each terminal of a Volta battery...