Submitted by home_cheese t3_z5bl9n in BuyItForLife
batcake42 t1_ixwdgk4 wrote
Reply to comment by Butlerian_Jihadi in Zojirushi SM-KHE48. Used daily for 6 years. Retains heat better than a Yeti, fewer $$$. by home_cheese
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!
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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