this post was submitted on 22 May 2025
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Technology
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This explains the real technology behind it:
https://en.wikipedia.org/wiki/Upconverting_nanoparticles
Yep, that won’t cause cancer.
It also doesn't have any accuracy whatsoever. It only makes it possible to detect infrared, but not to see where it came from. And being opaque they make you blind when wearing the lenses.
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.