sodium lamp
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sodium lamp — noun or sodium vapor lamp : a gas discharge lamp using sodium vapor and designed especially for lighting highways * * * Elect. See sodium vapor lamp. * * * sodium lamp noun A street lamp using sodium vapour and giving orange or yellow light • • • … Useful english dictionary
sodium lamp — Elect. See sodium vapor lamp. * * * … Universalium
Sodium amalgam — Sodium amalgam, commonly denoted Na(Hg), is an amalgam, or alloy of mercury, with sodium metal. When metallic sodium is dissolved in mercury, it reacts exothermically to produce the intermetallic compound NaHg2, with enough heat to cause… … Wikipedia
sodium vapour lamp — noun A sodium lamp • • • Main Entry: ↑sodium … Useful english dictionary
High-Pressure Sodium Lamp — A type of High Intensity Discharge (HID) lamp that uses sodium under high pressure as the primary light producing element. These high efficiency lights produce a golden white color and are used for interior industrial applications, such as in… … Energy terms
Low-Pressure Sodium Lamp — A type of lamp that produces light from sodium gas contained in a bulb operating at a partial pressure of 0.13 to 1.3 Pascal. The yellow light and large size make them applicable to lighting streets and parking lots … Energy terms
Low-pressure sodium lamp — A type of lamp that produces light from sodium gas contained in a bulb operating at apartial pressure of 0.13 to 1.3 Pascal. The yellow light and large size make them applicable to lighting streets and parking lots. U.S. Dept. of Energy,… … Energy terms
Sodium vapor lamp — A sodium vapor lamp is a gas discharge lamp which uses sodium in an excited state to produce light. There are two varieties of such lamps: low pressure and high pressure . Low pressure sodium Low pressure sodium (LPS) lamps, also known as sodium… … Wikipedia
sodium — n. Chem. a soft silver white reactive metallic element, occurring naturally in soda, salt, etc., that is important in industry and is an essential element in living organisms. Usage: Symb.: Na. Phrases and idioms: sodium bicarbonate a white… … Useful english dictionary
sodium-vapor lamp — /soh dee euhm vay peuhr/, Elect. an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways. Also called sodium lamp. [1935 40] * * * … Universalium
