cie

17-24-009

emissivity

hemispherical emissivity

ε ; εh

quotient of the radiant exitance of a radiator, Me, and the radiant exitance of a Planckian radiator at the same temperature, Mb

Note 1 to entry: The emissivity has unit one.

Note 2 to entry: This entry was numbered 845-04-09 in IEC 60050-845:1987.

Note 3 to entry: This entry was numbered 17-382 in CIE S 017:2011.

Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.