You only lack the proper key words. You are looking for the "solar constant"
A quick AltaVista search yielded 1370 watt/sq m. at the sight:
The magnitude of the Sun is -26.7. The magnitude of the Moon is -12.6. The
difference is 14.1 magnitudes. Each magnitude makes for a difference of
2.512 in brightness. 14.1 magnitudes gives us 2.512^14.1 or 436,800
brighter. This means that the Moon supplies .0031 watt/sq m.
> Ron, is this something you could answer? Thanks.
> Nina Thayer
> Snacktalk Moderator
> > From email@example.com Wed Jun 9 13:56:34 1999
> > Message-ID: <375EE106.5633F1C5@typatune.com>
> > Date: Wed, 09 Jun 1999 14:47:51 -0700
> > From: Stewart Martinsen <firstname.lastname@example.org>
> > Reply-To: Stewart@typatune.com
> > X-Mailer: Mozilla 4.04 [en] (Win95; I)
> > MIME-Version: 1.0
> > To: email@example.com
> > Subject: Lumens
> > Content-Type: text/plain; charset=us-ascii
> > Content-Transfer-Encoding: 7bit
> > Thank you for your light discussion...
> > I have a question about the light emitted form the sun (peak) and
> > reflected from a full moon (peak). How much brighter is the sun at noon
> > day at the equator, on either the spring or fall equinox than that of
> > the reflected light of a full moon (when every it is most intense).
> > In lumens per square foot is it close to?:
> > Sun = 10,000 lumens per sq/f.
> > Full Moon = .03 lumens per sq/f.
> > And what percentage of solar radiation is reflected or absorbed by the
> > earths atmosphere?
> > I have searched high and low for these stats. Can you help?
> > Thank you
-- ======================================================================== Ron Hipschman, Exploratorium, 3601 Lyon Street, San Francisco, CA 94123 (415) 563-7337 (415) 739-5052 (pager) firstname.lastname@example.org http://www.exploratorium.edu ========================================================================
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