Difference between revisions of "High Pressure Sodium (Vapour) Lamp"

Latest revision as of 10:01, 1 March 2009

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A sodium vapour lamp in which the partial pressure of the vapour during operation is of the order of 104newtons per square metre (0.1 atmosphere).

Reference: C.I.E.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

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