From: nospam@de-ster.demon.nl   
      
   Ross Finlayson  wrote:   
      
   > On 10/27/2025 01:22 PM, J. J. Lodder wrote:   
   > > chine.bleu  wrote:   
   > >   
   > >> Paul B. Andersen wrote:   
   > >>> The metric below defines The Special Theory of Relativity (SR).   
   > >>> What can be deduced from this metric is what SR predicts.   
   > >>>      (c?d?)? = (c?dt)? ? dx? ? dy? ? dz?   
   > >>>   
   > >>> The theory Einstein defined in "On the electrodynamics of moving   
   > >>> bodies" is identical to the theory defined by the metric above.   
   > >>>   
   > >>   
   > >> He did not understand differential geometry and tensors at that time. He   
   > >> had to educate himself between SR and GR.   
   > >   
   > > Differential geometry and tensors are irrelevant to special relativity.   
   > >   
   > > Just geometry will do, like for Euclidean geometry,   
   > >   
   > > Jan   
   > >   
   >   
   > Anything length-contraction or time-dilation is "tensors".   
      
   Fine, if you insist,   
   but then rotations in Euclidean space must be 'tensor' too.   
   Too bad Euclid couldn't understand his own geometry.   
      
   > "What's wrong with you?"   
      
   Good question. Do get a mirror,   
      
   Jan   
      
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