Radiation Constant -- from Eric Weisstein's World of Physics

Thermodynamics "> Blackbody Radiation v

Radiation Constant

The constant related to the total energy radiated by a blackbody (i.e., the Stefan-Boltzmann law), and defined as

where is the Stefan-Boltzmann constant, c is the speed of light, k is Boltzmann's constant, and h is Planck's constant. Numerically,

Stefan-Boltzmann Constant