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> You can't start a fire with moonlight[1] no matter how big your magnifying glass is.
> You can't use lenses and mirrors to make something hotter than the surface of the light source itself.
https://what-if.xkcd.com/145/
> You can't start a fire with moonlight[1] no matter how big your magnifying glass is.
> You can't use lenses and mirrors to make something hotter than the surface of the light source itself.
https://what-if.xkcd.com/145/