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electric arc

arc (def 2).
Origin of electric arc
1880-85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for electric-arc
Historical Examples
  • This is used for electric-arc carbons and for other purposes.

    Artificial Light M. Luckiesh
electric-arc in Science
electric arc  
An electric current, often strong, brief, and luminous, in which electrons jump across a gap. Electric arcs across specially designed electrodes can produce very high heats and bright light, and are used for such purposes as welding and illumination in spotlights. Unwanted arcs in electrical circuits can cause fires. Lightning is a case of an electric arc between one cloud and the earth or another cloud, as are sparks caused by discharges of static electricity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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