sodium-vapour lamp

sodium-vapour lamp

      electric discharge lamp using ionized sodium, used for street lighting and other illumination. A low-pressure sodium-vapour lamp consists of a glass shell with metal electrodes, filled with neon gas and a little sodium. When current passes between the electrodes, it ionizes the neon, giving a red glow, until the hot gas vaporizes the sodium. This ionizes and shines a nearly monochrome yellow. High-pressure sodium-vapour lamps, made with a mixture of mercury and sodium, give a whiter light and are used for extra-bright lighting in places such as road intersections and sports stadiums.

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Universalium. 2010.

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  • sodium vapour lamp — noun A sodium lamp • • • Main Entry: ↑sodium …   Useful english dictionary

  • sodium vapour lamp — natrio lempa statusas T sritis fizika atitikmenys: angl. sodium discharge lamp; sodium vapor lamp; sodium vapour lamp vok. Natriumdampflampe, f rus. натриевая лампа, f pranc. lampe à vapeur de sodium, f …   Fizikos terminų žodynas

  • sodium-vapour lamp — /soʊdiəm ˈveɪpə læmp/ (say sohdeeuhm vaypuh lamp) noun an electric lamp in which sodium vapour is activated by current passing between two electrodes, producing a yellow, glareless light which is widely used for street lighting. Also, sodium… …  

  • sodium-vapour lamp — (also sodium lamp) noun a lamp in which an electrical discharge in sodium vapour gives a yellow light …   English new terms dictionary

  • sodium-vapour lamp — noun lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting • Syn: ↑sodium vapor lamp • Hypernyms: ↑lamp …   Useful english dictionary

  • sodium vapour lamp — noun alternative spelling of sodium vapor lamp …   Wiktionary

  • sodium discharge lamp — natrio lempa statusas T sritis fizika atitikmenys: angl. sodium discharge lamp; sodium vapor lamp; sodium vapour lamp vok. Natriumdampflampe, f rus. натриевая лампа, f pranc. lampe à vapeur de sodium, f …   Fizikos terminų žodynas

  • sodium vapor lamp — natrio lempa statusas T sritis fizika atitikmenys: angl. sodium discharge lamp; sodium vapor lamp; sodium vapour lamp vok. Natriumdampflampe, f rus. натриевая лампа, f pranc. lampe à vapeur de sodium, f …   Fizikos terminų žodynas

  • sodium-vapor lamp — noun lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting • Syn: ↑sodium vapour lamp • Hypernyms: ↑lamp …   Useful english dictionary

  • sodium vapor lamp — noun a street lamp in which electricity is passed through sodium vapour to emit a yellow light Syn: sodium lamp …   Wiktionary

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