What is the absorptance emittance ratio?
Absorptivity is defined as the ratio of the radiation energy absorbed by any substance to that absorbed under the same conditions by a blackbody. Emissivity is denned as the ratio of the energy radiated by any substance to that radiated under the same conditions by a blackbody.
Absorptivity is defined as the ratio of the radiation energy absorbed by any substance to that absorbed under the same conditions by a blackbody. Emissivity is denned as the ratio of the energy radiated by any substance to that radiated under the same conditions by a blackbody.
