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mikeash
on Feb 3, 2016
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Graphene optical lens 200 nm thick breaks the diff...
Mirrors and lenses can be used with photovoltaics as well:
https://en.wikipedia.org/wiki/Concentrator_photovoltaics
I know pretty much nothing about it besides the fact that it exists, though.
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I know pretty much nothing about it besides the fact that it exists, though.