electric arc

electric arc
arc (def. 2).
[1880-85]

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      continuous, high-density electric current between two separated conductors in a gas or vapour with a relatively low potential difference, or voltage, across the conductors. The high-intensity light and heat of arcs are utilized in welding, in carbon-arc lamps and arc furnaces that operate at ordinary air pressure, and in low-pressure sodium-arc and mercury-arc lamps.

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Universalium. 2010.

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Look at other dictionaries:

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  • electric-arc furnace — noun an electric furnace in which an electric arc provides the source of heat for making steel • Syn: ↑Stassano furnace • Hypernyms: ↑electric furnace • Part Holonyms: ↑steel mill, ↑steelworks, ↑steel plant, ↑ …   Useful english dictionary

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