Astrophysics (index)

Radiance

(measure of EMR to/from a solid angle through and area)

Radiance is the rate of Electromagnetic Radiation (EMR) energy (power) emitted/radiated/transmitted through and area to/from a solid angle, e.g., watts (Joules per second) per steradian per square meter. Within astronomy, it is often called Intensity. Spectral Radiance is the the same per hertz (Frequency) or meter (Wavelength).


(EMR,measure)
http://en.wikipedia.org/wiki/Radiance

Referenced by:
Intensity
Irradiance
Planck Function
Radiative Flux
Radiative Transfer (RT)

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