# Radiation thermal resistance, surface to air

Thermal resistance for radiation from outer surface to ambient air using the Stefan-Boltzmann law.

Symbol
$T_{rad_{sa}}$
Unit
K.m/W
Formulae
$\frac{W_{rad_{sa}}}{- \theta_{a} + \theta_{e}}$
Related
$\theta_{a}$
$\theta_{e}$
$W_{rad_{sa}}$