From: relativity@paulba.no   
      
   Den 22.11.2025 09:50, skrev Thomas Heger:   
   > Am Samstag000022, 22.11.2025 um 04:28 schrieb Python:   
      
   >> Says the one who still missed that the "delay" of light propagation is   
   >> taken into account in Einstein's paper, even after people have a blue   
   >> tongue.   
   >   
   >   
   > The very word 'delay' is entirely missing in that paper. Also the   
   > treatment of something equivalent cannot be found.   
      
   Quote #1   
   quote from § 1. Definition of Simultaneity   
   -------------------------------------------   
   | "We have not defined a common “time” for A and B, for   
   |  the latter cannot be defined at all unless we establish   
   |  by definition that the “time” required by light to travel   
   |  from A to B equals the “time” it requires to travel from   
   |  B to A."   
      
   What is your 'delay', if it is not the 'time' required by   
   light to travel from A to B, or the 'time' it requires to   
   travel from B to A?   
      
   Quote #2   
   quote from § 1. Definition of Simultaneity   
   -------------------------------------------   
   | "Let a ray of light start at the “A time” tA from A towards B,   
   | let it at the “B time” tB be reflected at B in the direction   
   | of A, and arrive again at A at the “A time” t′A."   
      
   So  (tB-tA)  is the 'time' required by light to travel from A to B   
   and (tA'-tB) is the 'time' required by light to travel from B to A   
      
   If these times are equal, then the clocks are synchronous according to   
   the definition in Quote #1.   
      
   Thus:   
      
   Quote #3   
   quote from § 1. Definition of Simultaneity   
   -------------------------------------------   
   | " In accordance with definition the two clocks synchronize if   
   |       tB − tA = t′A − tB."   
      
   (The German  "laufen synchron" is translated with "synchronize".   
     A better translation would be "are synchronous".)   
      
   Simple and crystal clear, isn't it?   
      
   --   
   Paul   
      
   https://paulba.no/   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)