From: amirjfnin@aim.com   
      
   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".   
      
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