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Planck function

(Planck's law)
(yields black body curve)

The Planck function is a function of wavelength and temperature that describes the spectral radiance at each wavelength in black-body radiation.

         2hν3      1
B(ν,T) = ———— ———————————
          c2  ehν/(kBT) - 1

Radiance is the quantity of radiation emitted through a surface into a given solid angle, spectral radiance being the radiance at a given wavelength.

(function,physics,EMR,black body)

Referenced by:
black-body radiation
Rayleigh-Jeans law
spectral signature