low-pressure sodium lamp
low-pressure sodium vapour lamp
discharge lamp in which the light is produced by radiation from sodium vapour operating at a partial pressure of 0,1 Pa to 1,5 Pa
Note 1 to entry: This entry was numbered 845-07-24 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-702 in CIE S 017:2011.