Check out The Green Ray by Jules Verne, translated by Karen Loukes and published by Luath Press Ltd. It's a newly discovered classic with great descriptions of the green flash. An excellent book!
Green flash , wht is it ?
The density gradient in the atmosphere acts like a prism, refracting the thin sliver of sunlight into a rainbow. We see the green slice of the spectrum at this instant because the red is refracted away and the blue is scattered away, leaving green. - Hmmmm.......why is the red refracted away ? and the blue scattered away ? I know nothing about this , but , I do know that if you gaze long enough on a red spot a green one will appear , it's a gestalt "law" , about perception ...Hmm..
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