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Homework Help: Total power of the sun with Rayleigh-Jeans expression

  1. Sep 14, 2010 #1
    1. The problem statement, all variables and given/known data
    What is the totaly power emitted by the sun over all wavelengths (frequencies) according to the (incorrect) classical Rayliegh-Jeans expression for ρt(v)

    2. Relevant equations
    ρt(v)dv=8piv^2kT/c^3 dv

    3. The attempt at a solution
    I'm not sure how to start this one, would i need to take the integral of this equation?
  2. jcsd
  3. Sep 14, 2010 #2


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    Homework Helper
    Gold Member

    Sounds like a plan to me... (remember, the equation gives the power radiated in a range of frequencies [itex]\nu[/itex] to [itex]\nu+d\nu[/itex], so integrating over all possible frequencies will give the power radiated over the entire spectrum)
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