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Full Version: Negative absolute temperature
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I read wikipedia's article on Negative Absolute Temperature.  It has to do with the level of entropy decreasing after a certain point.  I thought the concept was bizarre and freaky enough for Orions Arm.  It does happen in things like lasers; I wondered if this is worth pursuing here.  What new uses would archailects find for it?
Interesting idea. Negative temperature systems are ones where entropy decreases as energy is added. Are there situations, perhaps high energy plasmas, where decreased entropy is useful?