Definition:Stefan-Boltzmann Constant/Units

Definition
The SI unit for the Stefan-Boltzmann constant is given in watts per square metre per kelvin to the $4$th:
 * $\mathrm {W \, m^{-2} \, K^{-4} }$

where:
 * $\mathrm W$ denotes the watt
 * $\mathrm m$ denotes the metre
 * $\mathrm K$ denotes the kelvin.