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- Newsgroups: sci.physics
- Path: sparky!uunet!darwin.sura.net!mips!pacbell.com!well!metares
- From: metares@well.sf.ca.us (Tom Van Flandern)
- Subject: Re: Twins Paradox Resolved
- Message-ID: <Bs0L9u.LwK@well.sf.ca.us>
- Sender: news@well.sf.ca.us
- Organization: Whole Earth 'Lectronic Link
- References: <BrrztE.J4u@well.sf.ca.us> <84054@netnews.upenn.edu>
- Date: Sun, 26 Jul 1992 21:05:54 GMT
- Lines: 30
-
-
- aguirre@wigner.physics.upenn.edu (Anthony Aguirre) writes:
-
- > I don't quite understand what the difference in approaching vs. receding
- > travelers has to do with it. I still claim that there really is no
- > asymmetry.
-
- We agree there is no asymmetry. The version given was a symmetric
- version of the twins paradox. The main point to note is that the
- differential aging effect does not depend on turn-arounds or accelerations or
- frame changes. There is "differential aging" in a one-way trip because of
- lack of distant simultaneity. T1 ages 7 months while traveling between
- events "T1 encounters E1" and "T1 encounters AC". At the first event, E1 is
- age zero. At the second event, E2 on AC (who is synchronized with E1 in the
- E-frame) is aged 4 years. There is no problem in the math here, everybody
- agrees. But people who argue that somebody needs to turn around to produce a
- differential aging effect should now be able to see that is unnecessary.
-
- As for logical problems, one must give up totally on the concept of
- distant simultaneity; and one must accept that *apparent* aging depends upon
- direction of travel, approach or receding. There is a way to avoid both of
- these considerable logical compromises. But I do not argue that they cannot
- be possible, only that one must make a sacrifice (unnecessarily, it turns
- out) of "common sense" to accept this interpretation of the experimental
- data. -|Tom|-
-
- --
- Tom Van Flandern / Washington, DC / metares@well.sf.ca.us
- Meta Research was founded to foster research into ideas not otherwise
- supported because they conflict with mainstream theories in Astronomy.
-