discharge

electric discharge lamp

or vapor lamp

Lighting device consisting of a transparent container within which a gas is energized by an applied voltage and made to glow. After practical generators were devised in the 19th century, many experimenters applied electric power to tubes of gas. From circa 1900, electric discharge lamps were in use in Europe and the U.S. Fluorescent, neon, mercury, sodium, and metal-halide lamps are of the electric discharge variety.

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Glow accompanying the brushlike discharges of atmospheric electricity that usually appears as a tip of light on the extremities of such pointed objects as church towers or the masts of ships during stormy weather. It is commonly accompanied by a crackling or fizzing noise. It is commonly observed on the periphery of propellers and along the wing tips, windshield, and nose of aircraft flying in dry snow, in ice crystals, or near thunderstorms. St. Elmo is an Italian corruption of St. Erasmus, patron saint of Mediterranean sailors, who traditionally regarded St. Elmo's fire as a sign of his guardianship over them.

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Discharge in the context to expel or to "let go" may refer to:

Discharge in the context of a flow may refer to:

Other uses of discharge include:

  • Discharge (band), the British hardcore punk band
  • Bankruptcy discharge, the injunction that bars acts to enforce certain debts.
  • In co-counselling, the ways in which pent-up emotional hurt can be released, eg via crying, laughter, etc.
  • Discharge petition, the process of bringing a bill out of committee to the floor for a vote without the cooperation of leadership

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