Stefan-Boltzmann constant

Stefan-Boltzmann constant

[′shte‚fän ′bōlts‚män ‚kän·stənt] (statistical mechanics) The energy radiated by a blackbody per unit area per unit time divided by the fourth power of the body's temperature; equal to (5.6696 ± 0.0010) × 10-8(watt)(meter)-2(kelvin)-4.