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Is it possible hf=kT?

  1. Dec 3, 2012 #1
    is it possible hf=kT? Under what condtion, it will be the same? where h is Plack constant, f is frequency and k is Boltzmann constant, T is temperature
  2. jcsd
  3. Dec 3, 2012 #2


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    Staff: Mentor

    For any frequency f, there is a T which satisfies the equation.
  4. Dec 3, 2012 #3

    edit:wait jtbell is this ever computed? I have never seen such an equality
    Last edited: Dec 3, 2012
  5. Dec 3, 2012 #4


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    It is used all the time. Any relation which involves thermal radation to/from a body held at a temperature T will involve thesee terms.
    At hf=kBT there are often "transitions" of some sort. In some cases you have a transition from the classical (thermal) to quantum regime when hf=kBT
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