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Infrared contact lenses let you see in the dark
(arstechnica.com)
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this post was submitted on 22 May 2025
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We already can detect direction of infrared radiation, it's called being warm on one side but not the other. Technically also possible by, say, lying half-way under a blanket and half-way not, but sensory integration takes care of the ambiguity.
More interestingly, did you know we can see the polarisation of light?
No I did not know that. Interesting.