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Another point:
Someone may say OK, so I will take a neutral filter with 10% transparency (dark sunglasses) and the day should look like a night with full moon above hozon... and this is clearly not so.
Albedo of whatever (0.1 for Moon) means that the incoming light has been reflected from the surface with 0.1 attenuation in ALL directions, not only toward us. That means, the surface brightness of the Moon is NOT 10% of the surface brightness of the Sun, it is much, much lower. It will be ~20% of the surface brightness of the earth surface, roughly.. because Earth albedo is ~50%.
Take that into account and you will see that watching the Moon and Sun are two VERY different things in terms of amount of received light involved (or in terms of surface brightnesses involved)
Last edited by bojan; 22-02-2007 at 11:01 AM.
Reason: Some more details added to stress the point
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