optical radiation effective in causing actinic erythema
Note 1 to entry:
Ultraviolet radiation is the most effective erythemal radiation.
Note 2 to entry: See also "erythema spectral weighting function", "standard erythema dose".
Note 3 to entry: This entry was numbered 845-06-16 in IEC 60050-845:1987.
Note 4 to entry: This entry was numbered 17-405 in CIE S 017:2011.