Eddington closure approximation
= Eddington closure approximation
{c}
The Eddington closure approximation sets the second angular moment to one third of the zeroth, so the radiation pressure and mean intensity satisfy $cP_r=4\pi J/3$.
= Eddington closure approximation
{c}
The Eddington closure approximation sets the second angular moment to one third of the zeroth, so the radiation pressure and mean intensity satisfy $cP_r=4\pi J/3$.