gas discharge lamp

lamp in which the light is produced, directly or indirectly, by an electric discharge through a gas, a metal vapour, or a mixture of several gases and vapours

Equivalent term: "gaseous discharge lamp"

NOTE According to whether the light is mainly produced in a gas or in a metal vapour, one distinguishes between gas discharge lamps, for example xenon, neon, helium, nitrogen, carbon dioxide lamp, and metal vapour lamps, for example the mercury vapour lamp and the sodium vapour lamp.

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