8
votes
Integration of Plank curve of the Sun
There are two issues here: one of definitions and one of code.
First, the value you're expecting to get here -- 1361 Watts per square meter, the solar constant -- is the total flux received from the ...
- 36k
6
votes
Accepted
Integration of Plank curve of the Sun
There is two issues:
a) you have to use Earth distance to get the Solar constant, but you use 1pc ($10^{16}$m)instead of one astronomical unit (150 million kilometers, $1.5\cdot 10^{11}$m). That's a ...
- 17.1k
3
votes
Integration of Plank curve of the Sun
The integral of the Planck function over all wavelengths gives the surface flux at the photosphere of the Sun divided by pi.
In order to get the solar constant, you should multiply this by $\pi \times ...
- 146k
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