Definition of sodium-vapour lamp in English:

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sodium-vapour lamp

(also sodium lamp)

noun

A lamp in which an electrical discharge in sodium vapour gives a yellow light, typically used in street lighting.
Example sentences
  • The light source was a sodium lamp.
  • The lantern uses a 100 Watt high pressure sodium lamp with a 1289 reflector and an integral control gear.
  • Lighting was supplemented from dawn to dusk with high pressure sodium lamps.

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