[extropy-chat] Question for the Astronomy/Physics Ubergeeks
dirk at neopax.com
Sat Apr 2 19:28:49 UTC 2005
Hal Finney wrote:
>I found a reference saying that the sun's angular size is about .001% of
>the celestial hemisphere. If you want to know the power form the CMB of a
>hemisphere, like the CMB from the sky as seen on earth, we would therefore
>increase the previous result by a factor of 10^4 and get 6.64E-7 W/m^2.
...10^5 and get 6.64E-6 W/m^2
ie 6.64 uW/m^2
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