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Article #1028

Re: Blue Sky at Night

#1028
From: David Knapp
Date: Mon, 10 Aug 1992 20:11
25 lines
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In article <93291@bu.edu> tvaughan@buphyk.bu.edu (tvaughan) writes:
>An interesting sidelight to the ongoing blue sky and Olbers' paradox
>discussion is the fact that the night sky is almost exactly the same
>color as the daytime sky, only much dimmer.  The reason for this is that
>moonlight has almost the same spectral composition as sunlight.

Eh?

Can you tell me where I can see the spectral distribution of moonlight
being the same as solar? There is little or no UV in the moon's reflected
spectrum. 


>Long-exposure photos of the night sky verify this quite dramatically.
>See, for instance, _Rainbows, Halos, and Glories_ by Greenler.
>
>Tim
>


-- 
David Knapp                                      University of Colorado, Boulder
Highly Opinionated, Aging  and                      knapp@spot.colorado.edu
Perpetual Student of Chemistry and Physics.
            Write me for an argument on your favorite subject.
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Message-ID: <1992Aug10.201138.29291@ucsu.Colorado.EDU>
Path: arc1-ca.pugleaf.net!sparky!uunet!boulder!ucsu!spot.Colorado.EDU!knapp
References: <93291@bu.edu>

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Newsgroups: sci.physics
Path: arc1-ca.pugleaf.net!sparky!uunet!boulder!ucsu!spot.Colorado.EDU!knapp
From: knapp@spot.Colorado.EDU (David Knapp)
Subject: Re: Blue Sky at Night
Message-ID: <1992Aug10.201138.29291@ucsu.Colorado.EDU>
Sender: news@ucsu.Colorado.EDU (USENET News System)
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Organization: University of Colorado, Boulder
References: <93291@bu.edu>
Date: Mon, 10 Aug 1992 20:11:38 GMT
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