Arc Lamp

"Arc lamp" or "arc light" is the general term for a class of lamps that produce light by an electric arc (also called a voltaic arc). The lamp consists of two electrodes, first made from carbon but typically made today of tungsten, which are separated by a gas. The type of lamp is often named by the gas contained in the bulb; including neon, argon, xenon, krypton, sodium, metal halide, and mercury, or by the type of electrode as in carbon-arc lamps. The common fluorescent lamp is a low-pressure mercury arc lamp.

Read more about Arc Lamp:  Operation, Carbon Arc Lamp, History

Famous quotes containing the words arc and/or lamp:

    You say that you are my judge; I do not know if you are; but take good heed not to judge me ill, because you would put yourself in great peril.
    —Joan Of Arc (c.1412–1431)

    Life is the lust of a lamp for the light that is dark till the dawn
    of the day when we die.
    —A.C. (Algernon Charles)