From: ryan@ezbbyne.pl   
      
   J. J. Lodder wrote:   
      
   > Paul.B.Andersen  wrote:   
   >> 2. SR predicts that a clock in GPS orbit which is running   
   >>     according to the SI definition will measure a mean solar day to   
   >>     last 86400?(1 + 4.4647e-10) s ≈ 86400s + 38.6 ?s   
   >>   
   >> 3. When a clock in GPS orbit is adjusted to run slow   
   >>     by the factor (1 - 4.4647e-10) compared to the SI-definition, then   
   >>     the clock will measure a mean solar day to last 86400 s.   
   >>   
   >> Please explain why the real measurement in 3.   
   >> do not confirm SR's prediction in 2.   
   >   
   > So the 'mean solar day' is by definition nothing but 86400 SI seconds.   
   > (of proper time)   
   > And of course 86401 seconds, once in every three years or so.   
   > The 'mean' can be left off.   
      
   hey Loddy, you do the same mistake. You can't have 86400 seconds /day,   
   once you don't possibly know how long that second is. That second is   
   nowhere available.   
      
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