quartz-halogen bulb

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• quartz-halogen bulb — A bulb with an inner quartz bulb which holds a tungsten filament. Usually the inner bulb contains an inert gas such as iodine or one of the other five halogen gases. The use of a halogen gas prevents the bulb from turning black and thus reducing… …   Dictionary of automotive terms

• quartz halogen bulb — See quartz halogen bulb …   Dictionary of automotive terms

• halogen bulb — A bulb containing a trace of a halogen, such as iodine. A halogen bulb gives off a brighter light. Also see quartz halogen bulb …   Dictionary of automotive terms

• tungsten-halogen bulb — A quartz halogen bulb with a tungsten filament …   Dictionary of automotive terms

• quartz halogen lamp — noun an incandescent light bulb in which the envelope is made of quartz instead of glass, and the filament is surrounded by an atmosphere of a halogen …   Wiktionary

• bulb — An electronic device which gives off light by the heating of an element contained with a glass enclosure. The metal base which conducts the electricity may be a barrel with locating pins, or it may have small filament wires protruding from the… …   Dictionary of automotive terms

• halogen — One of the chemical elements fluorine, chlorine, bromine, iodine, or astatine. Also see quartz halogen bulb …   Dictionary of automotive terms

• Halogen lamp — A halogen lamp is an incandescent lamp in which a tungsten filament is sealed into a compact transparent envelope filled with an inert gas, plus a small amount of halogen such as iodine or bromine. The halogen cycle increases the lifetime of the… …   Wikipedia

• quartz lamp — noun a mercury vapor lamp that is enclosed in a quartz container instead of a glass container • Hypernyms: ↑mercury vapor lamp * * * noun : a mercury vapor lamp in a tube of quartz glass that transmits most of the ultraviolet radiation * * * a… …   Useful english dictionary

• quartz-iodine lamp — ¦ ̷ ̷ ¦ ̷ ̷  ̷ ̷  ̷ ̷ noun : an incandescent lamp that has a quartz bulb and a tungsten filament and that contains iodine which reacts with the vaporized tungsten to prevent excessive blackening of the bulb * * * quartz lamp, quartz halogen lamp… …   Useful english dictionary

• halogen lamp — a gas filled, high intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used esp. in… …   Universalium