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Groups > sci.physics.relativity > #411734

Re: Twin paradox

From Sylvia Else <sylvia@not.at.this.address>
Newsgroups sci.physics.relativity
Subject Re: Twin paradox
Date 2017-03-05 11:42 +1100
Message-ID <ei1574Fdhs0U1@mid.individual.net> (permalink)
References <84b17e46-6e16-425b-a222-a8afdd5d2e58@googlegroups.com> <o9c0v2$1aur$1@gioia.aioe.org> <3e17e0da-f87a-4c37-b128-7b4f27842a1a@googlegroups.com> <o9c5qc$1leu$1@gioia.aioe.org> <d336f957-572b-420d-9557-064dc80c806c@googlegroups.com>

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On 5/03/2017 2:08 AM, Jonathan Doolin wrote:
> On Friday, March 3, 2017 at 10:32:15 AM UTC-6, Odd Bodkin wrote:
>> On 3/3/2017 10:12 AM, someone wrote:
>>> On Friday, March 3, 2017 at 3:09:25 PM UTC, Odd Bodkin wrote:
>>>> On 3/3/2017 9:04 AM, someone wrote:
>>>>> The twin paradox is as I understand it that there are twins,
>>>>> and one goes off in a spaceship, and as it does from its
>>>>> perspective the other twins clock is going slower, but from
>>>>> the twin on Earths perspective the twin going off in a
>>>>> spaceships clock is going slower. But when they come back to
>>>>> meet it cannot be that both clocks were going slower. It is
>>>>> then claimed that the one that was on the spaceship will be
>>>>> the one that aged for some reason.
>>>>> https://en.wikipedia.org/wiki/Twin_paradox states:
>>>>
>>>> In the description above you have laid bare a lot of the
>>>> misconceptions about relativity that this puzzle was explicitly
>>>> designed to illuminate.
>>>>
>>>> Among these misconceptions are: - That the experiences of the
>>>> two twins are symmetric - That both twins will see the other's
>>>> clock as being behind throughout the whole trip - That this
>>>> puzzle is an example of inertial motion throughout - That time
>>>> dilation is all about clocks running slower and nothing else
>>>> (missing completely the point about synchronization being
>>>> frame-dependent)
>>>>
>>>>
>>>
>>> Do you think those misconceptions are also in
>>> https://en.wikipedia.org/wiki/Twin_paradox
>>>
>>> If not, what did I write that made you think I was describing the
>>> situation any differently than the wiki write up? In the part you
>>> snipped I referenced the acceleration for example, so how could
>>> you think I was suggesting it was an example of inertial motion
>>> throughout, or symmetric (given the acceleration)?
>>>
>>> I didn't mention seeing each others clocks on the return journey
>>> either.
>>>
>>> I notice you didn't address any of the questions either.
>>
>> The intent of my post was not to explain the twin paradox to you.
>> There are plenty of really good expositions, especially in books,
>> that do a fantastic job of doing that. The wiki article is not that
>> great by the way, for exactly the same reason that learning zoology
>> is not best done by looking up encyclopedia articles about
>> different animals. It's better understood in the context of an
>> explanation of special relativity as a whole. I recommend Taylor
>> and Wheeler's book called Spacetime Physics.
>>
>> The purpose of my post was to simply say that the list of questions
>> that you raise are exactly the questions that beginners to the
>> subject ask, because they have certain misconceptions about what
>> special relativity has to say about this situation. And so the twin
>> puzzle is a useful teaching tool to correct those misconceptions.
>>
>>>
>>>
>>>> -- Odd Bodkin -- maker of fine toys, tools, tables
>>>
>>
>>
>> -- Odd Bodkin -- maker of fine toys, tools, tables
>
> If you go back to the talk pages in archive 14 you'll see some
> animations I made around that time.
>
> There is apparently, according to Dirk Van de Moortel, NO LITERATURE
> in peer-reviewed journals that actually shows the Lorentz
> Transformations actually done so that the spacetime diagram is shown
> in the three frames.
>
> Therefore any animation or discussion of what the two-dimensional
> spacetime diagram would look like from the perspective of the
> traveling twin during any moment of their travels is forbidden to be
> discussed in the article.
>
>
> Without that option to actually show the spacetime diagram in the
> rest frame of the outbound twin, the inbound twin, and the
> stay-at-home twin, the explanations tend to really give the
> impression that the traveling twin has no other data about what
> happened except, that their clock reads a smaller change than the
> stay-at-home twin.
>
> But this would of course not be the most notable thing that occurred
> during the twin's journey.  For the twin, surely, the thing that
> would blow his mind during the journey would be the fact that during
> his turnaround, the image of the earth (indeed, for all intents and
> purposes, the earth itself) jumps back an enormous distance.
>

The image of the Earth would do nothing unusual other than changing from 
being somewhat red to somewhat blue. In particular, it would not jump.

However, the observer's changed velocity relative to the Earth would 
mean that the *calculated* position of the Earth in the observer's frame 
would abruptly change, as would the calculated time on Earth.

Sylvia.

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Thread

Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-03 07:04 -0800
  Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-03 09:09 -0600
    Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-03 08:12 -0800
      Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-03 10:32 -0600
        Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-04 07:08 -0800
          Re: Twin paradox rotchm <rotchm@gmail.com> - 2017-03-04 07:47 -0800
            Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-04 09:15 -0800
            Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-04 10:23 -0800
          Re: Twin paradox Sylvia Else <sylvia@not.at.this.address> - 2017-03-05 11:42 +1100
            Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-05 08:55 -0800
            Re: Twin paradox wugi <brol@brol.be> - 2017-03-14 22:31 +0100
              Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-15 03:22 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-17 18:39 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-17 13:56 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-17 22:54 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-17 17:32 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-18 18:16 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-19 08:28 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-19 23:09 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 08:14 -0700
                Re: Twin paradox Sylvia Else <sylvia@not.at.this.address> - 2017-03-19 13:05 +1100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-19 09:44 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-19 22:38 +0100
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-19 19:30 -0500
                Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-19 22:41 -0700
                Re: Twin paradox mlwozniak@wp.pl - 2017-03-20 00:29 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 08:59 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-21 10:53 -0500
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-21 18:59 +0100
                Re: Twin paradox Sylvia Else <sylvia@not.at.this.address> - 2017-03-22 17:45 +1100
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-22 11:25 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 06:42 -0700
                Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-22 00:26 -0700
                Re: Twin paradox Sylvia Else <sylvia@not.at.this.address> - 2017-03-22 19:30 +1100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 07:56 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 05:49 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 06:17 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 08:20 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 11:08 -0800
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-22 11:41 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 11:51 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 12:02 -0800
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-23 07:06 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-29 11:24 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-27 13:50 -0500
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-28 06:18 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-28 12:13 -0500
                Re: Twin paradox dickorrich@gmail.com - 2017-03-29 10:45 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-29 11:22 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-30 00:17 -0500
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-30 06:02 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-04-03 12:31 -0500
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-04 02:14 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-03 17:21 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-04-04 10:37 -0500
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-04 08:52 -0700
                Re: Twin paradox Poutnik <poutnik4nntp@gmail.com> - 2017-04-04 18:51 +0200
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 02:39 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 08:36 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-20 17:27 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 10:49 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-20 21:10 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 16:59 -0700
                Re: Twin paradox wugi <brol@brol.be> - 2017-03-21 12:37 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-21 06:13 -0700
                Re: Twin paradox Gary Harnagel <hitlong@yahoo.com> - 2017-03-21 08:03 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-21 11:03 -0700
  Re: Twin paradox "Dono," <sa_ge@comcast.net> - 2017-03-04 06:20 -0800
  Re: Twin paradox Ed Lake <detect@newsguy.com> - 2017-03-04 09:41 -0800
    Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-05 14:59 -0600
      Re: Twin paradox alsor@interia.pl - 2017-03-05 13:23 -0800
    Re: Twin paradox Mike Fontenot <mlfasf@comcast.net> - 2017-03-07 09:46 -0700
      Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-07 10:10 -0800
        Re: Twin paradox Mike Fontenot <mlfasf@comcast.net> - 2017-03-07 12:13 -0700
          Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-07 13:32 -0800
            Re: Twin paradox Poutnik <poutnik4nntp@gmail.com> - 2017-03-08 07:58 +0100
              Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-08 09:09 -0800
                Re: Twin paradox Poutnik <poutnik4nntp@gmail.com> - 2017-03-08 23:04 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-08 16:19 -0800
  Re: Twin paradox John Heath <heathjohn2@gmail.com> - 2017-03-04 11:23 -0800
    Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-04 14:02 -0800
    Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-06 12:05 -0800
      Re: Twin paradox John Heath <heathjohn2@gmail.com> - 2017-03-06 16:34 -0800
        Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-07 12:57 +0100
          Re: Twin paradox John Heath <heathjohn2@gmail.com> - 2017-03-07 20:29 -0800
  Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-04 22:13 -0600
    Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-09 12:58 -0800
      Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-10 07:25 -0600
      Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-10 13:21 -0800
  Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-05 08:44 -0800
    Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-06 12:03 -0800
      Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-06 18:02 -0800
        Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-07 14:15 -0800
  Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-05 21:31 +0100
    Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-05 15:09 -0800
      Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-05 15:18 -0800
        Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-06 23:10 +0100
          Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-10 11:39 -0800
            Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-13 09:53 -0500
              Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-13 08:33 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-14 10:50 -0500
                Re: Twin paradox mlwozniak@wp.pl - 2017-03-15 00:43 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-15 04:08 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-16 16:48 -0500
                Re: Twin paradox mlwozniak@wp.pl - 2017-03-17 01:01 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-17 07:40 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-18 14:16 -0500
                Re: Twin paradox Idimi Higame <iumia@igmwwad.hh> - 2017-03-18 20:05 +0000
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-19 09:28 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-20 13:55 -0500
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 16:34 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-21 10:56 -0500
                Re: Twin paradox Julio Di Egidio <julio@diegidio.name> - 2017-03-19 21:38 -0700
                Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-19 22:52 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-21 00:14 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-21 13:43 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 01:39 -0800
                Re: Twin paradox mlwozniak@wp.pl - 2017-03-22 01:52 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 11:12 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 11:56 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-22 12:06 -0800
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-15 04:16 -0700
    Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-06 09:34 -0800
      Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-06 23:01 +0100
        Re: Twin paradox alsor@interia.pl - 2017-03-06 15:09 -0800
        Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-07 09:49 -0800
        Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-07 14:04 -0800
          Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-08 10:40 +0100
            Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-08 07:11 -0800
              Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-08 15:04 -0600
                Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-08 14:30 -0800
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-09 10:39 -0600
                Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-09 13:20 -0800
                Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-10 07:27 -0600
                Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-10 06:05 -0800
                Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-10 08:45 -0600
                Re: Twin paradox alsor@interia.pl - 2017-03-14 13:19 -0700
              Re: Twin paradox "Paul B. Andersen" <relativity@paulba.no> - 2017-03-10 11:49 +0100
          Re: Twin paradox wugi <brol@brol.be> - 2017-03-17 17:37 +0100
            Re: Twin paradox Julio Di Egidio <julio@diegidio.name> - 2017-03-19 21:33 -0700
              Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-03-20 09:05 -0700
        Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-09 13:12 -0800
          Re: Twin paradox Otplate Yuugaku <yu@yotwaglwt.pa> - 2017-03-09 22:50 +0000
            Re: Twin paradox Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2017-03-10 11:01 +0100
              Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-10 11:14 -0800
              Re: Twin paradox Priscilla Groll <lloi@wgnprlw.sl> - 2017-03-11 17:27 +0000
        Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-04 06:13 -0700
          Re: Twin paradox Hermelinda Riess <hsr@ermeemw.ei> - 2017-04-04 15:10 +0000
            Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-04 08:36 -0700
              Re: Twin paradox Hermelinda Riess <hsr@ermeemw.ei> - 2017-04-04 17:51 +0000
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 02:52 -0700
                Re: Twin paradox Hermelinda Riess <hsr@ermeemw.ei> - 2017-04-05 17:17 +0000
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-05 13:31 -0800
  Re: Twin paradox Julio Di Egidio <julio@diegidio.name> - 2017-03-08 14:17 -0800
    Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-08 14:34 -0800
      Re: Twin paradox Julio Di Egidio <julio@diegidio.name> - 2017-03-08 15:32 -0800
        Re: Twin paradox someone <glenn.spigel@googlemail.com> - 2017-03-09 13:20 -0800
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-09 13:35 -0800
  Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-12 00:07 -0800
  Re: Twin paradox ronjresnick@gmail.com - 2017-03-13 13:58 -0700
    Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-14 10:28 -0500
      Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-14 12:31 -0700
      Re: Twin paradox "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-14 22:11 +0000
        Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-14 22:34 -0500
          Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-15 00:46 -0700
            Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-15 00:53 -0700
              Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-15 09:19 -0500
              Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-16 23:50 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-16 23:54 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-17 08:15 -0800
                Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-17 09:03 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-18 18:37 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-03-19 00:20 -0800
            Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-15 09:15 -0500
            Re: Twin paradox rotchm <rotchm@gmail.com> - 2017-03-15 07:54 -0700
          Re: Twin paradox Julio Di Egidio <julio@diegidio.name> - 2017-03-15 02:53 -0700
            Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-15 15:18 -0500
              Re: Twin paradox Koobee Wublee <koobee.wublee@gmail.com> - 2017-03-19 22:43 -0700
          Re: Twin paradox mlwozniak@wp.pl - 2017-03-15 03:22 -0700
          Re: Twin paradox "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-15 21:31 +0000
          Re: Twin paradox alsor@interia.pl - 2017-03-16 16:56 -0700
      Re: Twin paradox mlwozniak@wp.pl - 2017-03-15 00:41 -0700
      Re: Twin paradox Ron Resnick <ronjresnick@gmail.com> - 2017-03-15 03:09 -0700
        Re: Twin paradox rotchm <rotchm@gmail.com> - 2017-03-15 08:02 -0700
    Re: Twin paradox "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-14 22:10 +0000
    Re: Twin paradox rotchm <rotchm@gmail.com> - 2017-03-15 07:41 -0700
      Re: Twin paradox Odd Bodkin <bodkinodd@gmail.com> - 2017-03-15 10:02 -0500
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-14 11:19 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-18 11:51 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-18 14:13 -0700
  Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-19 09:26 -0700
    Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-03-19 09:53 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-19 12:59 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-20 10:29 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-22 09:40 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-22 09:44 -0700
  Re: Twin paradox numbernumber1964@gmail.com - 2017-03-22 14:32 -0700
  Re: Twin paradox Deon Joubert <dhjoubert@gmail.com> - 2017-03-30 09:27 -0700
    Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-30 23:34 -0500
      Re: Twin paradox Deon Joubert <dhjoubert@gmail.com> - 2017-03-31 00:33 -0700
        Re: Twin paradox Deon Joubert <dhjoubert@gmail.com> - 2017-03-31 02:43 -0700
        Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-03-31 21:43 -0500
          Re: Twin paradox mlwozniak@wp.pl - 2017-04-01 00:52 -0700
          Re: Twin paradox Deon Joubert <dhjoubert@gmail.com> - 2017-04-01 01:41 -0700
            Re: Twin paradox Domonique Corle <oreuni@wwerwo.co> - 2017-04-01 13:01 +0000
            Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-04-01 10:27 -0500
              Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-01 20:44 -0800
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-03 00:05 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-03 00:28 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-03 04:14 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-03 17:15 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-04 11:47 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-04 05:57 -0700
                Re: Twin paradox Paparios <mrios@ing.puc.cl> - 2017-04-04 07:05 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-04 07:43 -0700
                Re: Twin paradox Paparios <mrios@ing.puc.cl> - 2017-04-04 09:20 -0700
                Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-04-04 09:58 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 02:25 -0700
                Re: Twin paradox Paparios <mrios@ing.puc.cl> - 2017-04-05 04:22 -0700
                Re: Twin paradox mlwozniak@wp.pl - 2017-04-05 06:23 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 09:58 -0700
                Re: Twin paradox Paparios <mrios@ing.puc.cl> - 2017-04-05 10:21 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 11:36 -0700
                Re: Twin paradox Hermelinda Riess <hsr@ermeemw.ei> - 2017-04-04 15:01 +0000
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-05 00:32 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-05 02:55 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-07 21:32 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-08 07:38 -0700
                Re: Twin paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2017-04-08 10:31 -0500
                Re: Twin paradox mlwozniak@wp.pl - 2017-04-08 08:42 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-09 14:29 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-10 22:18 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-11 06:11 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-12 00:13 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-12 07:00 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-12 14:49 -0700
                Re: Twin paradox Ned Latham <nedlatham@woden.valhalla.oz> - 2017-04-13 09:44 +0000
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-13 06:03 -0700
                Re: Twin paradox Ned Latham <nedlatham@woden.valhalla.oz> - 2017-04-13 20:40 +0000
                Re: Twin paradox "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-04-14 10:42 +0100
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-14 08:27 -0700
                Re: Twin paradox Gary Harnagel <hitlong@yahoo.com> - 2017-04-16 05:49 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-17 08:05 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-17 08:22 -0700
                Re: Twin paradox Nocasto Aboyar <oocaao@syeoby.ao> - 2017-04-17 15:36 +0000
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-17 09:08 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-17 10:45 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-17 10:56 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-19 10:14 -0700
                Re: Twin paradox Jonathan Doolin <good4usoul@gmail.com> - 2017-04-20 08:48 -0700
                Re: Twin paradox mlwozniak@wp.pl - 2017-04-17 08:52 -0700
                Re: Twin paradox The Starmaker <starmaker@ix.netcom.com> - 2017-04-08 09:51 -0700
                Re: Twin paradox "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-04-08 12:28 -0700

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