Electric arc | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electric_arc


00:00:58 1 History
00:03:49 2 Overview
00:08:29 3 Uses
00:10:16 3.1 Guiding the arc
00:10:58 4 Undesired arcing
00:14:35 5 Arc suppression
00:15:52 6 See also



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SUMMARY
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An electric arc, or arc discharge, is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma; the plasma may produce visible light. An arc discharge is characterized by a lower voltage than a glow discharge and relies on thermionic emission of electrons from the electrodes supporting the arc. An archaic term is voltaic arc, as used in the phrase "voltaic arc lamp".
Techniques for arc suppression can be used to reduce the duration or likelihood of arc formation.
In the late 1800s, electric arc lighting was in wide use for public lighting.
Some low-pressure electric arcs are used in many applications.  For example, fluorescent tubes, mercury, sodium, and metal-halide lamps are used for lighting; xenon arc lamps have been used for movie projectors.