The StefanBoltzmann LawThe total power per unit area from a blackbody radiator can be obtained by integrating the Planck radiation formula over all wavelengths. The radiated power per unit area as a function of wavelength is so the integrated power is It is helpful to make the substitution Making the substitution gives Making use of the standard form integral gives the final form of the StefanBoltzmann law

Index Blackbody radiation concepts  
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