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Originally Posted by George
The atmosphere must play a crticial role in the color we perceive as it is white at noon, then yellow, orange and redish.
The sun appears to me to peak around 450 nm - Blue. Here, I hope, is the Sun's light curve >>> Graph <<< |
Thanks for the graph. I found a similar one in a book and it too puts the Sun's lambda-max at about 450 nm, which is really annoying because the BA says the Sun's light curve peaks in the green (500-550 nm). Grrrhh!
Some people avoid the problem altogether by claiming that when the Sun is high in the sky it looks white, as it ought to. But if that's the case, why is it that even children automatically colour the Sun yellow in their pictures?
I think Visitor's ideas are along the right lines. It must have something to do with the way our cones process photons.