From: fortunati.luigi@gmail.com   
      
   Phillip Helbigundress to reply domenica 01/01/2023 alle ore 01:01:17 ha   
   scritto:   
   > That is the well known fact that rotation, like other accelerations,   
   > appears to be absolute.  Somewhat puzzling is the question "relative to   
   > what?"   
      
   The question is not puzzling, it is poorly posed.   
      
   The *real* rotation is not the observed one and, therefore, does not   
   depend on the reference.   
      
   The real rotation of bodies is an *internal* matter which concerns the   
   atoms of which the body is composed.   
      
   If the atoms of the body are not in tension, if no atoms push or pull   
   adjacent ones, and if no atoms are pushed or pulled by them, then the   
   body is not rotating.   
      
   If, on the other hand, all atoms are in radial tension, if each atom   
   pushes and pulls adjacent ones in a radial direction and is pushed and   
   pulled by them, then the body is in rotation.   
      
   To establish whether a body is rotating or not, we must not rely on   
   external references but only on internal radial forces.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)