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 Thermodynamic magic enables cooling without energy consumption

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Thermodynamic magic enables cooling without energy consumption Vide
PostSubject: Thermodynamic magic enables cooling without energy consumption   Thermodynamic magic enables cooling without energy consumption Icon_minitimeFri Apr 19, 2019 9:27 pm

Physicists at the University of Zurich have developed an amazingly simple device that allows heat to flow temporarily from a cold to a warm object without an external power supply. Intriguingly, the process initially appears to contradict the fundamental laws of physics.

Thermodynamic magic enables cooling without energy consumption 1-thermodynami

If you put a teapot of boiling water on the kitchen table, it will gradually cool down. However, its temperature is not expected to fall below that of the table. It is precisely this everyday experience that illustrates one of the fundamental laws of physics—the second law of thermodynamics—which states that the entropy of a closed natural system must increase over time. Or, more simply put: Heat can flow by itself only from a warmer to a colder object, and not the other way round.

Cooling below room temperature

Here:  https://phys.org/news/2019-04-thermodynamic-magic-enables-cooling-energy.html
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