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How light can vaporize water without the need for heat | MIT
(news.mit.edu)
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this post was submitted on 26 Jun 2024
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The sun's spectrum at the earth surface peaks in the green color range, which should make green the most efficient choice. Although, I wonder why they have to absorb only a single or a narrow band of color.
Producing multiple pigments to absorb more colours is very expensive, and the chemical reactions only take a certain amount of energy, anything beyond is converted into heat (which is bad for water retention).