-=> Maurice Kinal wrote to Tony Langdon <=-   
      
    MK> -={ Monday, 02 May 2016, 00:35:37.070065305 +1000 }=-   
      
    MK> Hey Tony!   
      
    TL> I just find resolution exceeding accuracy to be "not right". My   
    TL> engineering studies showing up. ;)   
      
    MK> Normally I'd agree but in this case it is more a function of what the   
    MK> inner landscaper finds.  If we decided to drop the %N part it should be   
    MK> accurate to the second given modern syncing routines but then we lose   
    MK> in the uniqueness department.   
      
    MK> How long does your inner engineer calculate before nanosecond accuracy   
    MK> becomes a reality and we're considered visionary?   
      
   Hmm, good question.  Maintaining nanosecond synchronisation with latency and   
   jitter of intervening links orders of magnitude greater is tricky!  1 nS is   
   equivalent to about a foot of travel at the speed of light! :)  The jitter is   
   the more problematic issue.  Maybe when atomic clocks are built into every   
   timekeeping device. ;)   
      
   I was thinking something like millisecoond accuracy.  But where do we have to   
   be unique?  On a single system?  Across all systems?   
      
   Nanosecond or greater precision also creates issues with synchrinisation -   
   where is the absolute time reference?  What about clock drift due to altitude   
   or speed differences? (general/special relativity)?  At the nanosecond   
   precision, these are all measureable and significant! :-)  GPS satellite clocks   
   have to run at a slightly different frequency to compensate for relativistic   
   effects, because time passes at a different rate up there than down here,   
   mostly due to Earth's gravity, which is much stronger down here at the surface,   
   causing time to pass more slowly here.   
      
      
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