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Originally Posted by George
The idea that the Sun is white because it's intensity is too great for us to see it's color, can be tested. What if we make a strobe (a slit in a rotating disk) to attenuate the total light received, then, maybe it will look yellow. Naturally, the sky is 100% overcast.
My bet is it will still look white as the spectrum (post atmosphere) suggests.
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Or, you could make a different device (you could even use the same materials!), by putting a pinhole in the pie tin (or a piece of paper, cardboard, etc.) and projecting the Sun onto a white surface (but you'd better hope it's an honest white!) like you do for looking at sunspots or eclipses. That would give you variable attenuation too, by changing the distance between the two; you could make it as bright as you can stand to (hopefully) get the best cone response.
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Going back a bit, during the sky & cloud color discussion, I was wondering: what about the green color of the clouds you see just before hail and/or tornados? What brings that about? I've found that far odder than the blue sky or a perceived yellow Sun.