Previous Page...   Printer Version Science Constants - Constant, Stefan-Boltzmann (π2/60)k4/ħ3c2 Symbol: σ Value: 5.670400(40) × 10-8 W m-2 K-4 Category: - Physico-Chemical Constants Description:   [ H O M E ] [ S C I E N C E ] [ M A T H S ] [ A S T R O N O M Y ] [ Download ] [ Shop ] [ Contact ] [ About ]