Hatena2009-07-16
code:hatena
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*1247717804*Sunset gradient
Yeah, I was looking at the sunset sky yesterday, and I noticed that between the blue sky and the sunset, it's not magenta, it's more like blue to white to yellow to red.
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RGB: 1,0,0 -> 1,1,0 -> 1,1,1 -> 0,0,1 gradient and 1,0,0 -> 0,0,1 gradient.
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<username>earth2001y</username>
<body>Between the red light and the blue light there is green light, so that's what makes it white or yellow. It's a matter of scattering which color the sky will be, not that the original light doesn't have green wavelengths. </body>
<timestamp>1247738501</timestamp>
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