From: PointedEars@web.de   
      
   [Supersedes: Sorry, I broke the link]   
      
   amirjf nin wrote:   
   > I bet if you miniaturized this experiment and used modern technology and   
   > put it on a turntable and then did "stop and stare" eastward and then   
   > westward there would be glaring non-null results.   
   >   
   > "Test of the isotropy of the one-way speed of light using hydrogen-maser   
   > frequency standards"   
   >   
   > https://journals.aps.org/prd/abstract/10.1103/PhysRevD.42.731   
      
   You must not be particularly good at betting, let alone physics.  The reason   
   that you could write this, and the reason that I can read it now, is that   
   the engineers who built these devices did so based on the assumption, that   
   had previously been confirmed by thousands of independently working   
   experimental physicists (if that is even enough), that the speed of light in   
   vacuum is the same in every (momentarily) inertial reference frame, and that   
   notions of a luminiferious aether do not work.   
      
   Also, if you miniaturized this experiment, the already small limits would   
   even be smaller; any differences that could be detected with the larger   
   experiment would become unmeasurably small.  That is the reason why they did   
   the larger experiment.   
      
   However, this experiment in which it is claimed that the isotropy of the   
   one-way speed of light has been tested is questionable because it is   
   questionable that the *one-way* speed of light can even be reliably   
   measured: One needs synchronized clocks, but the only proven way to   
   synchronize clocks is to send a signal from one to the other or to both and   
   back.  But this syncronization procedure already depends on the assumption   
   of the isotropy of the speed of light.   
      
   See also:   
      
   Thomas Lahn: Special Relativity (public playlist)   
   Veritasium: Why No One Has Measured The Speed Of Light   
      
      
   --   
   PointedEars   
      
   Twitter: @PointedEars2   
   Please do not cc me. / Bitte keine Kopien per E-Mail.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)