I could probably give you a link on Google, but I'm going to guess that this won't help. The derivation of Planck's black body law is, in principle, simple but involves an odd feature where we should be taking an integral but have to take a sum in order to get the correct values. It's a brief excursion into Statistical Mechanics. Can you show us what you have done so we can help focus our help?Dear All,
From what I read about the Planck's law I found different formulations according different quantities and variables.
Quantities: Radiance L (Wm*-2sr*-1), Intensity I (Wsr*-1), Flux density M (Wm*-2), Energy density u (Jm*-3)
Each having different variable, by example Radiance L can be function of wave length, frequency, angular frequency, wave number, spectroscopic wave number.
This result to a lot of Planck law formulation
Im confused, ...as usual
If fellow has the courage to drop me explanation, I will be very glad.
Thanks and best regards
Sorry. I knew that but forgot.Dan,
Thanks for your Google proposal.
But here in China Google is blocked
Thanks and regards
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