From: richalivingston@gmail.com   
      
   On Monday, September 4, 2023 at 2:14:38=E2=80=AFAM UTC-5, Luigi Fortunati   
   wrote:   
   > wugi il 03/09/2023 09:21:35 ha scritto:   
   ...   
   > There are 2 types of contraction.   
   >   
   > One is the contraction of the "space" between D and E (which is what   
   > you measure with your method and about which I have nothing to dispute   
   > about) and another is the contraction of the "body" AC, about which I   
   > have so much to say.   
      
   No, there is only one.  Relative to the coordinates of the (inertial) observer,   
   the moving coordinates (i.e. rulers moving with the rod) are contracted.   
   This is real.  The rod is contracted, the rulers are contracted, the space   
   is contracted.   
      
   >   
   > The contracting space DE has no consequences, because the space between   
   > D and E is empty.   
   >   
   > But the AC rod is not empty and if it contracts there are consequences   
   > (if the contraction is real).   
      
   The rod is contracted, as viewed by the stationary observer, but that doesn't   
    mean that there is any stress in the rod.  As far as the rod is concerned   
   everything is normal.   
      
   Rich L   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)