# Total power of the sun with Rayleigh-Jeans expression

1. Sep 14, 2010

### bhsmith

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. Sep 14, 2010

### gabbagabbahey

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