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valgusallika geomeetrilise kogu-kiirgusvoo Φ 4π sterradiaani spektraaltihedus, spectral concentration of the geometrically-total 4π steradian radiant flux Φ of a light source
spektraalne kogu-kiirgusvoog . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/spektraalne%20kogu-kiirgusvoog/1/est (05.08.2026)
