17-22-046

non-luminous colour

colour perceived to belong to an area that appears to be transmitting or diffusely reflecting light as a secondary light source

Note 1 to entry:
Secondary light sources seen in their natural surroundings normally exhibit the appearance of non-luminous colours in this sense.

Note 2 to entry: This entry was numbered 845-02-23 in IEC 60050-845:1987.

Note 3 to entry: This entry was numbered 17-818 in CIE S 017:2011.

Publication date: 2020-12