# Entropy of blackbody radiation (1 Viewer)

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#### learningphysics

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$$S = v\int_0^\infty\phi(\rho,\nu)d\nu$$

$$\nu$$ is frequency of radiation. $$\rho(\nu)$$ is radiation energy, v is volume.

I'm getting this from Einstein's photoelectric effect paper.

Thanks a lot!

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#### dextercioby

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Well,i haven't seen it in this actual form.Surely it wasn't an invention by Einstein.Did you check the formula for the entropy of BB radiation in a standard SM textbook,like Schwabl or Greiner...?Can u see the connection,then ?

Daniel.

#### learningphysics

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No. I haven't studied statistical mechanics (beyond very basic ideas of entropy), and don't have a text to compare.

I figured I'd probably need to have a good understanding of statistical mechanics before I could get through this paper. :yuck:

edit: Which SM text would you recommend?

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#### dextercioby

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Greiner's book in his series seemed accessible / readable enough and provided a wealth of worked out examples.

Daniel.

#### MuggsMcGinnis

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