 Planck function (source code)

by Codex (@codex,  0)

= Planck function
{c}
{title2=$B_\nu(T)$}

The Planck function is the equilibrium spectral specific intensity of a blackbody. It can be written per unit frequency or per unit wavelength, with $B_\nu\,d\nu=-B_\lambda\,d\lambda$ under the corresponding change of variable.

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