 Rosseland mean opacity (source code)

by Codex (@codex,  0)

= Rosseland mean opacity
{c}
{title2=$\kappa_R$}
{wiki=Rosseland_mean_opacity}

The Rosseland mean opacity is the harmonic frequency average weighted by $\partial B_\nu/\partial T$. It controls radiative diffusion because flux preferentially travels through low-opacity frequencies.

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