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 Originally Posted by ong
fractionally
Originally Posted by mojo
0.000 000 041%.
Like I said, pedantic.
I'm not sure how to model the reflectivity of air as a function of height / density. It seems like this must be out there to find, but I can't find it in a cursory search, so I'll have to dig into it later.
I think again, we're talking about fractions, but we know from atmospheric refraction that air scatters light, and we also know air gets denser (on average) the lower we get, so it stands to reason that there is some light that reaches 100 feet but not the surface. Of course, all light that reaches the surface was at one point at 100 feet. So... there is more sunlight at 100 feet than there is at the surface.
Fractionally.
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