XPost: rec.arts.tv, alt.fan.rush-limbaugh   
   From: nospam@de-ster.demon.nl   
      
   Paul B. Andersen  wrote:   
      
   > Den 01.11.2025 13:43, skrev J. J. Lodder:   
   > > Paul.B.Andersen  wrote:   
   > >   
   > >> Den 31.10.2025 13:21, skrev Maciej Wo?niak:   
   > >>>   
   > >>> GPS clocks are adjusted down by (1 - 4.4647e-10)   
   > >>> so the adjusted clock will measure a mean solar day   
   > >>> to last 86400 s, and the clock will stay in sync with UTC.   
   > >>   
   > >> Right.   
   > >>   
   > >>>   
   > >>> I.e. where The Shit is predicting the measurement   
   > >>> result of 86400s+37(afair)us, the real measurement   
   > >>> result is 86400, with the precision of an acceptable   
   > >>> error. Common sense has been warning your idiot guru.   
   > >>   
   > >> Lets take this one step at the time:   
   > >>   
   > >> 1. A clock on the ground which is running according to   
   > >>      the SI definition will measure a mean solar day to   
   > >>      last 86400 s.   
   > >>   
   > >> 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.   
   > >   
   > > You shouldn't allow yourself to be dragged   
   > > into this 'mean solar day' nonsense.   
   > > There is no way that a 'mean solar day' can be measured   
   > > to anything like the accuracy of an atomic clock.   
   > > That is precisely the reason why the astronomical definition of the   
   > > second was given up, long ago.   
   >   
   > This 'discussion' is with Maciej Wo?niak.   
   > The only kind of second he knows is 1/86400 part of a mean solar day.   
      
   So I pointed out that the 'mean solar day'   
   is no longer a well-defined -measurable- quantity.   
   It can only be defined in some suitable way,   
   as 86400 SI seconds for example.   
      
   > > So the 'mean solar day' is by definition nothing but   
   > > 86400 SI secondo. (of proper time)   
   >   
   > You have to add: measured by a clock on the geoid.   
      
   You should not feed my own words back to me,   
      
   Jan   
      
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