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Re: Inescapable (symmetric) twins paradox

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On 8/10/15 8/10/15 - 3:07 PM, Jon Price wrote:
> Hi Julio, In the experiment the clocks and twins change between different
> reference frames. For example, between earths frame and the one of motion
> away from earth. Since the clocks and twins change reference frames, doesn't
> that mean special relativity does not apply?

No. Not at all. But it DOES mean that simplistic applications of "time dilation" 
do not apply. One must CALCULATE the elapsed proper time for each twin via the 
appropriate integral over each path. This is straightforward, and when one does 
that, one finds that for the symmetric case of this thread the two twins' clocks 
display equal elapsed proper times. For the case you mention, assuming the 
"motion" twin comes back to earth to complete the scenario, then the "motion 
twin" will experience less elapsed proper time than the one who remained on 
earth [#].

	[#] Gravity, rotation, and the orbital velocity of the earth
	are all negligible in any example of the twin paradox in which
	the traveling twin leaves and comes back at a speed approaching
	c, so they are neglected and the earthbound twin is treated as
	inertial.



You seem to have jumped into the middle of a cesspool in which a number of 
idiots are attempting to argue with a few knowledgeable people (who are greatly 
outnumbered around here).

You may not have enough experience in physics to distinguish idiots and poseurs 
from people who understand modern physics. The only way I know to do that is 
that idiots and poseurs never reference textbooks, while knowledgeable people 
often do. I recommend:

	Taylor and Wheeler, _Spacetime_Physics_.


Tom Roberts

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Thread

Inescapable (symmetric) twins paradox Jon Price <jonelwoodprice@gmail.com> - 2015-08-10 13:07 -0700
  Re: Inescapable (symmetric) twins paradox Maciej Woźniak <mlwozniak@wp.pl> - 2015-08-10 22:10 +0200
    Re: Inescapable (symmetric) twins paradox Jon Price <jonelwoodprice@gmail.com> - 2015-08-10 13:36 -0700
      Re: Inescapable (symmetric) twins paradox Maciej Woźniak <mlwozniak@wp.pl> - 2015-08-10 22:54 +0200
  Re: Inescapable (symmetric) twins paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2015-08-10 16:53 -0500
    Re: Inescapable (symmetric) twins paradox Jon Price <jonelwoodprice@gmail.com> - 2015-08-10 18:24 -0700
    Re: Inescapable (symmetric) twins paradox Koobee Wublee <koobee.wublee@gmail.com> - 2015-08-10 23:06 -0700
    Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-11 05:43 -0700
    Re: Inescapable (symmetric) twins paradox RichD <r_delaney2001@yahoo.com> - 2015-09-01 09:32 -0700
      Re: Inescapable (symmetric) twins paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2015-09-02 10:32 -0500
        Re: Inescapable (symmetric) twins paradox RichD <r_delaney2001@yahoo.com> - 2015-09-06 22:01 -0700
          Re: Inescapable (symmetric) twins paradox Tom Roberts <tjroberts137@sbcglobal.net> - 2015-09-07 09:52 -0500
  Re: Inescapable (symmetric) twins paradox Koobee Wublee <koobee.wublee@gmail.com> - 2015-08-10 21:34 -0700
    Re: Inescapable (symmetric) twins paradox rotchm <rotchm@gmail.com> - 2015-08-11 07:39 -0700
      Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-11 08:06 -0700
        Re: Inescapable (symmetric) twins paradox rotchm <rotchm@gmail.com> - 2015-08-11 08:34 -0700
          Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-11 08:47 -0700
            Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-11 11:02 -0500
              Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-11 14:49 -0700
                Re: Inescapable (symmetric) twins paradox Gary Harnagel <hitlong@yahoo.com> - 2015-08-11 15:11 -0700
                Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-11 17:16 -0500
                Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-12 07:11 -0700
                Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-12 09:53 -0500
                Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-12 09:09 -0700
                Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-12 11:29 -0500
                Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-12 13:09 -0700
                Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-12 15:39 -0500
                Re: Inescapable (symmetric) twins paradox kenseto <setoken@att.net> - 2015-08-12 14:47 -0700
                Re: Inescapable (symmetric) twins paradox Odd Bodkin <bodkinodd@gmail.com> - 2015-08-12 16:52 -0500

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