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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
reduced luminance coefficient . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/reduced%20luminance%20coefficient/1/eng (14.07.2026)
