High Pressure Sodium (Vapour) Lamp

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search

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)