Cold Made From Heat
Cold Made From Heat Jingyuan Xu. Photo courtesy of Jingyuan Xu Yi-Ting Hsiau. Photo courtesy of Yi-Ting Hsiau Jingyuan Xu and Yi-Ting Hsiau on a metal that moves when warmed, cools when released, and a refrigerator whose engine is a strip of the same metal Editor’s Note Most refrigerators and air conditioners on Earth work
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