Area Lighting / Emission, optical properties of materials IEV ref 845-04-07 en Stefan-Boltzmann's law relation between the radiant exitance of a Planckian radiator and its temperature ${M}_{e}=\sigma {Τ}^{4}$$\sigma =\frac{2{\pi }^{5}{k}^{4}}{15{h}^{3}{c}_{\text{o}}^{2}}=\left(5,670\text{\hspace{0.17em}}51±0,000\text{\hspace{0.17em}}1\text{\hspace{0.17em}}9\right)×{10}^{-8}\text{\hspace{0.17em}}\text{W}\cdot {\text{m}}^{-2}\cdot {\text{K}}^{-4}$ [SOURCE: See the meaning of symbols under 845-04-05.] fr loi de Stefan-Boltzmann, f relation entre l'exitance énergétique d'un radiateur de Planck et sa température ${M}_{e}=\sigma {Τ}^{4}$ $\sigma =\frac{2{\pi }^{5}{k}^{4}}{15{h}^{3}{c}_{\text{o}}^{2}}=\left(5,670\text{\hspace{0.17em}}51±0,000\text{\hspace{0.17em}}1\text{\hspace{0.17em}}9\right)×{10}^{-8}\text{\hspace{0.17em}}\text{W}\cdot {\text{m}}^{-2}\cdot {\text{K}}^{-4}$ [SOURCE: Voir la signification des symboles à 845-04-05] ar قانون ستيفان-بولتزمان de Stefan-Boltzmannsches Gesetz, n es ley de Stefan-Boltzmann fi Stefanin-Boltzmannin laki it legge di Stefan-Boltzmann ko 스테판-볼츠만 법칙 ja シュテファン・ボルツマンの法則 no nb Stefan-Boltzmanns lov nn Stefan-Boltzmanns lov pl prawo Stefana-Boltzmana pt lei de Stefan-Boltzmann sv Stefan-Bolzmanns lag