Stef|an-Boltz|mann law

Stef|an-Boltz|mann law «STEHF uhn BOHLTS muhn»,

the law stating that the total energy radiated per second by each unit area of a perfect black body is proportional to the fourth power of its absolute temperature.

╂[< Josef Stefan, 1835-1893, Ludwig Boltzmann, 1844-1906, Austrian physicists]