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   sci.physics      Physical laws, properties, etc.      178,923 messages   

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   Message 177,288 of 178,923   
   J. J. Lodder to Rich Ulrich   
   Re: The antics of thermodynamics, the de   
   09 Mar 25 11:27:09   
   
   XPost: alt.usage.english   
   From: nospam@de-ster.demon.nl   
      
   Rich Ulrich  wrote:   
      
   > On Sun, 9 Mar 2025 00:38:55 +0000, bertietaylor@myyahoo.com   
   > (bertietaylor) wrote:   
   >   
   > >   
   > >Wrong analogy. The balloon is full of pressurised gas and in every point   
   > >within the balloon the pressure is the same. The Earth is solid, which   
   > >melts after someway down, then again becomes hot solid, then cold solid,   
   > >then very cold solid at the core, cold enough to support superconducting   
   > >currents.   
   >   
   > I hadn't figured out that system before.   
      
   Then don't.   
   You have allowed yourself to be misled by our resident nutter.   
   The pressure in a balloon in NOT the same at every point.   
   There is a pressure gradient.   
   In fact, that pressure gradient is precisely the reason why it floats.   
   It took a real genius, named Archimedes, 2500 years ago,   
   to see that.   
      
   > Okay, I can imagine the the center is slightly less compressed   
   > than what surrounds it.   
      
   I'm sure you can imagine it, if you have practiced enough with Alice,   
   but it is impossible nevertheless.   
      
   > But you seem to imagine that heat and pressure are not   
   > transmitted toward the center.  Over millenia, the center will   
   > approach the temperature of what surrounds it. And the pressure.   
   > Equilibria.   
   >   
   > But the planet is cooling.   
      
   Not. It is in a quasi-stationary state.   
      
   > The center can only lose heat through the surrounding layers.   
      
   Correct.   
      
   > So whatever max heat was reached by the center, it will be the last to be   
   > touched by the cooling of the planet.   
      
   More nonsense.   
   Hint: there is radioactive heating throughout,   
      
   Jan   
      
   --   
   More hint: our resident nutterdom is best ignored altogether,   
   whatever the names it presents itself in.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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