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Unformatted text preview:  The Planck distribution function describes the average number of photons < s > in a particular frequency σ for blackbody radiation and is given by: < s > = StefanBoltzmann law of radiation  The StefanBoltzmann law of radiation gives the energy density of radiation in a cavity, as can be expressed: = τ 4 Formulae The probability of finding a system in energy state if the system is in thermal contact with a reservoir P ( ) = The entropy of blackbody radiation σ = ( ) 3...
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This note was uploaded on 02/09/2012 for the course PHY PHY2053 taught by Professor Davidjudd during the Fall '10 term at Broward College.
 Fall '10
 DavidJudd
 Physics, Thermodynamics

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