alt Hacker NewsBut it should. If you can get energy to flow one way between things at the same physical temperature that seems to violate thermodynamics and allow for perpetual motion.
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sametemptjjr • today at 6:20 PM
only for passive systems.
what's described in this paper is not passive, it has a powered amplifier in there which lowers the "noise temperature"
same way a heat pump can move heat between things at the same temperature - inside and outside of house when you start it
I'll pretend you don't mean "sustained" to allow me to type something. Does this qualify?
Put a bowl of water down at room temperature, wait for one molecule to "evaporate", and I think you did it? Unfortunately they are now no longer at the same temperature.
Temperature is an average. You can still take advantage of the fact that there will be much lower and higher temperatures present. Also, what about Peltier effect? Same temperature when it starts.