The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.
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direct actinic effect
actinic effect that occurs at the place where the radiant energy responsible for the effect is absorbed
EXAMPLE Conversion of 7-dehydrocholesterol to previtamin D3.
Note 1 to entry: This entry was numbered 845-06-04 in IEC 60050-845:1987.