From: amirjfnin@aim.com   
      
   On 2/19/2026 6:01 PM, Thomas 'PointedEars' Lahn wrote:   
   > 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?   
   >   
      
   https://iopscience.iop.org/article/10.1209/epl/i2001-00502-1   
      
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