From: PointedEars@web.de   
      
   amirjf nin wrote:   
   > On 2/19/2026 4:48 PM, Thomas 'PointedEars' Lahn wrote:   
   >> amirjf nin wrote:   
   >>> Has anyone tried Michelson-Morley-type experiments with the ECI in mind?   
   >>   
   >> What do you mean by "Michelson-Morley-type experiment" and "with the ECI in   
   >> mind"?  What are you getting at?   
   >>   
   >> *An* ECI (Earth-centered inertial) coordinate frame is a useful theoretical   
   >> model for describing satellite orbits and analyze relativistic effects such   
   >> as "gravitational time dilation" (scare quotes intended; it is a convenient   
   >> misnomer), not something that can be realized physically/experimentally:   
   >> there is no object that can practically be at rest in an ECI.   
   >>   
   >>    
   >   
   > I am fairly certain all of the mainstream papers regarding modern   
   > Michelson-Morley replications never ever mention "ECI".   
      
   Again, assuming that would be true, now knowing what an ECI is, why do you   
   think that they should?   
      
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   PointedEars   
      
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