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   sci.physics.research      Current physics research. (Moderated)      17,516 messages   

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   Message 15,646 of 17,516   
   Poutnik to All   
   Re: entropy and gravitation   
   03 Jun 17 07:07:28   
   
   XPost: sci.astro.research   
   From: poutnik4nntp@gmail.com   
      
   Dne 02/06/2017 v 23:43 jacobnavia napsal(a):   
   > Le 02/06/2017 à 09:16, Poutnik a écrit :   
   >> Thermodynamics generally does not care,   
   >> what time it takes for a system   
   >> to get into the preferred final state.   
   >   
   > "Final state" implies time.   
   >   
   > Atoms A and B in gas state are inserted into a container in proportion   
   > 1:1. The final state is an almost perfect distribution of a mixture of   
   > both gases. We do not expect the gases to appear separated after some   
   > time. That is the accepted final state of a smooth distribution for two   
   > gases in a container at room temperature say.   
   >   
   > But is it the final state?   
   >   
   > Surely not, since if not given any external energy, the final state of   
   > the mixture could be a separated mixture of frozen A and B at almost   
   > absolute zero. Let's suppose that when freezing, gases A and B do not   
   > mix easily.   
   >   
   > Time is always there in all physics. The concept of "final state"   
   > implies time, you see?   
   >   
   "does not care what time"   
   does not mean   
   "time is not implied"   
      
   As thermodynamics is just one side of the coin.   
   The other is kinetics.   
      
   Some states are thermodynamically stable,   
   some are kinetically stable, some both.   
      
   --   
   Poutnik ( The Pilgrim, Der Wanderer )   
      
   A wise man guards words he says,   
   as they say about him more,   
   than he says about the subject.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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