Preferred Label : radiant exitance;
Detailed label : radiant exitance, M;
IUPAC definition : Radiant power, P, u emitted /u at all wavelengths by an element of surface containing
the source point under consideration divided by the area of the source. SI unit is
W m-2.;
Scope note : same as spherical radiant exitance. formerly called radiant emittance.; equivalent to the integration of the radiant power leaving a source over the solid
angle and over the whole wavelength range. mathematical definition: m
¿ ¿ m¿ , wherem¿is the spectral radiant exitance at wavelength ¿.; mathematical definition: m s p . if the radiant power pis constant
over the surface area considered, m p s .;
Origin ID : R05041;
See also
Radiant power, P, u emitted /u at all wavelengths by an element of surface containing
the source point under consideration divided by the area of the source. SI unit is
W m-2.
