this post was submitted on 20 Mar 2025
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Is this method converting the heat entropy into a coherent light, or in other words, useful work? Sounds like reversing the second law of thermodynamics.
Note how the efficiency sharply drops with a lower temperature; this looks a lot like a heat pump, that we know to not violate the second law.
Based on that my guess is that the loss of local entropy causes a raise of the entropy elsewhere. Probably whatever you're using to keep the LED warm.