7 articles
Arc flash
An arc flash is the sudden release of electrical energy through the air when a high-voltage gap breaks down between conductors, reaching temperatures near 35,000 °F.
Arc lamp
An arc lamp, also called an electric arc lamp, is a light source that produces illumination from an electric arc between two electrodes, lighting streets from the 1840s onward.
Cathode spot
A cathode spot is a minute, highly mobile luminous area on a cathode that emits electrons, plasma jets, and metal vapor to sustain an arc, especially the vacuum arc, where it remains the least understood phenomenon.
Electric arc
An electric arc, also known as a voltaic arc or arc discharge, is a self-sustaining electrical discharge through plasma between electrodes, used in welding and steelmaking and seen in lightning.
Mercury-vapor lamp
A mercury-vapor lamp is a high-intensity discharge lamp that makes bluish-white light by passing an electric arc through vaporized mercury, used for street lighting since 1901.
Plasma torch
A plasma torch is a device that generates a controlled jet of thermal plasma by passing gas through an electric arc, used for cutting, spraying, and melting metals.
Xenon arc lamp
A xenon arc lamp is a gas discharge lamp whose electric arc through high-pressure xenon yields daylight-like white light, standard for cinema projection from 1954 into the 2010s.