From: poraty149@gmail.com   
      
   On Thursday, April 12, 2018 at 12:03:28 AM UTC+3, Y Porat wrote:   
   > On Monday, February 19, 2018 at 2:16:46 PM UTC+2, Arindam Banerjee wrote:   
   > [[Mod. note -- 25 excessively-quoted lines snipped here.  -- jt]]   
   > > [[Mod. note --   
   > >   
   > > 1. Permanent magnets don't violate conservation of energy.   
   >   
   > ===========================   
   > if so   
   > how is it that a permanent magnet   
   > don t violate conservation of energy ???:   
   >   
   > there is there some nonstop movement of something   
   > that can even do some work :   
   > (like   
   > attracting/moving along a distance   some piece of iron mass- along some   
   distance   
   > and still   
   > -''no violation of conservation of energy'' ??!!   
   > ====================   
   > TIA   
   > Y.Porat   
   > =============================   
   >   
   > [[Mod. note -- No violation of conservation of energy here, any more   
   > than there would be if that piece of iron mass slid down a slope.  In   
   > both cases you have a system with some potential energy, which is used   
   > to do work (and in which frictional forces result in that potential   
   > energy being converted to heat as the iron mass slides).   
   > -- jt]]   
   ==================   
   I am not referring to the to one act of attracting a piece  of iron   
   I wonder about the   
   **permanent ability** and what makes/keeps  that permanent ability   
   -theoretically forever ! to attract a piece of iron   
   without being exhausted !   
   ================   
   TIA   
   Y.Porat   
   ========================   
      
   [[Mod. note -- This seems quite analogous to the Earth's permanent   
   ability -- theoretically forever -- to gravitationally attract objects   
   on the Earth's surface without being exhausted.  I don't see any   
   violation of conservation of energy here.   
   -- jt]]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)