/u/DrBucket's posts in /r/askscience
How is waving a fan at your face actually cooling you off? Aren't you just expending more energy and heating yourself up more by shaking your arm non stop?
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If green light (500-565 nm) is the most abundant wavelength of light the sun emits, why do plants reflect it instead absorbing it and reflecting some other color?
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How does a photon rebound back at the peak of it's wavelength and then return at the trough? Why doesn't it just keep going accordingly to the angle set by it's frequency?
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