High Pressure Sodium (Vapour) Lamp

2-3-360

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)

English

[[Category:2.3 Light Sources]