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by RC_ITR
1217 days ago
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This is a very fun fact because it describes why we see the wavelengths that we do! Visible light is pretty much just the portion of the EM spectrum that is poorly absorbed by water [0] (and that is also produced by the sun and also poorly absorbed by atmosphere) If radio worked well in water (where eyes first evolved), then we would just "see" radio waves (except in practice the Sun doesn't make enough of them that reach Earth). [0] http://hyperphysics.phy-astr.gsu.edu/hbase/Chemical/watabs.h... |
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