## FANDOM

48 Pages

A black body is an idealized physical body that absorbs all incident electromagnetic radiation regardless of frequency (and wavelength).

A black body in thermal equilibrium has a few notable properties

1. It is an ideal emitter
2. It is a diffuse emitter, the energy is radiated isotropically, independent of direction
3. It emits as much energy as it absorbs

## Flux at the SurfaceEdit

This equation can also be found in flux but will be included here for good measure. The flux emitted at the surface of a black body is described with:

$F _{blackbody, surface} = \sigma T^4$