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batcake42 t1_ixwdgk4 wrote

Isn’t black body radiation how they made ice in the desert thousands of years ago? Insane how it’s now being used for an insulated cup! That’s wild!

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Butlerian_Jihadi t1_ixwee1o wrote

Not sure about that, kind of doubt it. Blackbody radiation is when something gives off energy as photons due to its heat. Things have to get worse pretty hot for us to be able to see it (think a glowing fire poker or the ember of a cigarette), but that radiation is still being emitted even if it's below our ability to perceive it.

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