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dEdt
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All the derivations of the Rayleigh-Jeans 'Law' I've seen assume that the electromagnetic radiation is enclosed in a cube. I'm trying to derive the law using less arbitrary circumstances. That is, by starting with the equation [tex]U=\int \left[ \frac{\epsilon_0}{2}E^2 + \frac{1}{2\mu_0}B^2 \right]dV,[/tex]
then taking the Fourier transform of the electric and magnetic fields, appling Parseval's theorem, and finally using the equipartition theorem I hope to calculate the spectral energy density. Unfortunately I'm having trouble filling in the details, and would appreciate some help. Thanks.
then taking the Fourier transform of the electric and magnetic fields, appling Parseval's theorem, and finally using the equipartition theorem I hope to calculate the spectral energy density. Unfortunately I'm having trouble filling in the details, and would appreciate some help. Thanks.