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Re: Einstein Explains the Twin Paradox

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On 1/14/16 8:17 AM, Mike Fontenot wrote:
>
> [...]
>  That additional issue is whether the twin who
> accelerates can determine the current age of the unaccelerating twin at
> each of his own ages during his trip.
>

The common answer to the question "Why doesn't the "traveling twin" 
conclude that the home twin will be the younger one when they are 
reunited" is that the fact that the "traveling twin" accelerates at the 
turnaround breaks the symmetry between the two twins.  Although this 
answer is correct, it still understandably leaves many people 
dissatisfied, and feeling that there must be more to the story than 
that.  A more complete answer is that the "traveling twin" DOES conclude 
that the home twin is ageing more slowly during all portions of the trip 
where the "traveler" isn't accelerating (which, in the usual scenario is 
ALMOST ALL of the trip).  But during the turnaround (no matter how 
brief), the accelerating twin will conclude that the home twin suddenly 
ages by a very large amount.  That sudden ageing is so great that it 
makes the total ageing of the home twin at the end of the trip be much 
greater than the "traveler's" total ageing.  The two twins will always 
agree about their corresponding ages at the end of the trip, even though 
they completely disagree about the correspondence between their ages at 
(most) other times during the trip.

-- 
   https://sites.google.com/site/cadoequation/cado-reference-frame

   "Accelerated Observers in Special Relativity", PHYSICS ESSAYS, 
December 1999, p629.

   All you ever need to know about the twin "paradox".

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Einstein Explains the Twin Paradox Pentcho Valev <pvalev@yahoo.com> - 2016-01-14 04:08 -0800
  Re: Einstein Explains the Twin Paradox Gary Harnagel <hitlong@yahoo.com> - 2016-01-14 04:57 -0800
    Re: Einstein Explains the Twin Paradox "Paul B. Andersen" <relativity@paulba.no> - 2016-01-14 14:53 +0100
      Re: Einstein Explains the Twin Paradox Mike Fontenot <mlfasf@comcast.net> - 2016-01-14 08:12 -0700
      Re: Einstein Explains the Twin Paradox Mike Fontenot <mlfasf@comcast.net> - 2016-01-14 08:17 -0700
        Re: Einstein Explains the Twin Paradox Maciej Woźniak <mlwozniak@wp.pl> - 2016-01-14 17:20 +0100
        Re: Einstein Explains the Twin Paradox Mike Fontenot <mlfasf@comcast.net> - 2016-01-14 13:28 -0700
          Re: Einstein Explains the Twin Paradox Maciej Woźniak <mlwozniak@wp.pl> - 2016-01-14 22:06 +0100
      Re: Einstein Explains the Twin Paradox Koobee Wublee <koobee.wublee@gmail.com> - 2016-01-14 10:13 -0800
  Einstein Explains the Twin Paradox Pentcho Valev <pvalev@yahoo.com> - 2016-01-14 05:48 -0800
    Re: Einstein Explains the Twin Paradox Gary Harnagel <hitlong@yahoo.com> - 2016-01-14 06:07 -0800
    Einstein Explains the Twin Paradox Pentcho Valev <pvalev@yahoo.com> - 2016-01-15 18:03 -0800
  Re: Einstein Explains the Twin Paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2016-01-14 09:47 -0600
    Re: Einstein Explains the Twin Paradox Koobee Wublee <koobee.wublee@gmail.com> - 2016-01-14 10:23 -0800
      Re: Einstein Explains the Twin Paradox Gary Harnagel <hitlong@yahoo.com> - 2016-01-14 11:45 -0800
  Re: Einstein Explains the Twin Paradox David Waite <waitedavid1618@yahoo.com> - 2016-01-14 07:58 -0800
  Re: Einstein Explains the Twin Paradox jamesl51165@gmail.com - 2016-01-14 08:31 -0800

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