emissioonivõime
ratio of the energy radiated from a material's surface to that radiated from a perfect emitter, known as a blackbody, at the same temperature and wavelength and under the same viewing conditions, materjali pinnalt kiirgava energia ja kogu kiirgava energia suhe, mida tuntakse musta kehana, samal temperatuuril ja lainepikkusel ning samadel tingimustel
