[extropy-chat] Question for the Astronomy/Physics Ubergeeks

[Dirk Bruere]

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

-- 
Dirk

The Consensus:-
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http://www.theconsensus.org



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