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dnautics
on Jan 27, 2016
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Why are submarines demagnetized?
I think your understanding of evolution is a bit off, since there are other creatures with common ancestor (birds) that can see into long UV.
madaxe_again
on Jan 28, 2016
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And magnetic anomalies, apparently, if they're migratory, via polarisation of uv iirc.
dnautics
on Jan 28, 2016
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another hypothesis is that spin-coupled electrons preferentially and directionally emit photons from a cryptochrome protein. But tbh, we don't really know yet.
http://www.ks.uiuc.edu/Research/cryptochrome/
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