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by oniony
694 days ago
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I noticed this when I had nickel-titanium glasses frames maybe 20 years ago. If I folded them in half at the bridge they would get hot, I could then conduct the heat away with my fingers, then, releasing the tension, the bridge would get very cold. Just like a refrigerant, but solid. I did wonder at the time if they could replace the refrigerant in fridges with this but figured they would eventually fail from repeated bending. |
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