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pinnaelemendi heledusteguri ja sellele langeva valguse langenurga koosiinuse kuubi korrutis, luminance coefficient of a surface element multiplied by the cube of the cosine of the angle of incidence of the light on the surface element
taandatud heledustegur . Metroloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mea/taandatud%20heledustegur/1/est (29.07.2026)
