temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source, ideaalse musta keha temperatuur, mis kiirgab valgusallikaga võrreldava värviga valgust, mustkiirguri temperatuur, mille puhul kiirguse värvsus on samasugune nagu antud stiimulil, parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque, non-reflective body