Stefan-Boltzmann Law · P = σT⁴
unseel.com · σ = 5.67×10⁻⁸ W/m²K⁴ · blackbody radiation
T 300 K
Flux 459 W/m²
phase
Cool body 300–1500K
Hot body 3000–5778K
Photon stream
Flux readout
Unseel.com · Stefan-Boltzmann Law