- #1
redbaldyhead
- 9
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Homework Statement
B=10^-7Wm^-2Hz^-1sr^-1;T=10^4K
h=6.6x10^-34J.s
k=1.4x10-23JK^-1
c=3.0x10^8m^-1
Homework Equations
Calculate v fom Bv(T)=(2hv^3)/(c^2)x1/(exp(hv/kT)-1)
The Attempt at a Solution
I have managed to obtain a LHS= (Bc^2/2h)xexp(h/kT)
but RHS is posing a problem to me!
I just cannot resolve v^3/(exp v-1)
I have tried the tactic of changing the base of the exp to log10 throughout but I am still left with v^3/((log v/log 2.718) - .4342) on the RHS to deal with!
I should expect an answer v = 10^15 Hz but the best I get is ~10^18
Thanks I hope I have made this clear as I'm not particularly computer literate