Solving a problem in physics section 42 point 81 quantu

Solving a problem in physics section 42 point 81 quantu

81. Using Planck´s formula, determine the spectral density of the radiation flux per unit surface of a black body, attributable to a narrow range of wavelengths Δλ = 5 nm around the maximum of the spectral density of irradiance, if the temperature of the black body T = 2500 K.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)