solar constant


NOTE: This definition was changed in RP-16-17 Addendum 2. Deletions have a strike-through. New text is old.

Irradiance produced by extraterrestrial solar radiation on a surface perpendicular to the sun’s rays at the mean Sun-Earth distance.

[See extraterrestrial solar irradiance constant.]

*International Lighting Vocabulary, CIE S 017/E:2011. Vienna: International Commission on Illumination; 2011.

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