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The significance of each term in Planck's Radiation Formula

  1. Mar 31, 2017 #1
    1. The problem statement, all variables and given/known data

    I(λ, T) is 4 pieces multiplied: (8π/λ4) (hc/λ) (1/(ehc/λkT-1) (c/4).

    1. Identify the meaning of each term.
    2. Which term(s) fix the ultraviolet catastrophe?

    3. The attempt at a solution

    Well I know that the energy of a photon is given by (hc/λ), and I'm fairly certain it was Planck who introduced the ehc/λkT-1 term to reconcile the ultraviolet catastrophe, but that's about it. I've been looking through Planck's derivation and I am quite overwhelmed by the statistical analysis required.
     
  2. jcsd
  3. Apr 1, 2017 #2

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    Well, you identified two out of four terms. One is just a constant.
    You have the probability that state is occupied and you have the energy of a photon in this state, but what about the "number" of states?
     
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