home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!ogicse!hp-cv!sdd.hp.com!mips!darwin.sura.net!cs.ucf.edu!news
- From: clarke@acme.ucf.edu (Thomas Clarke)
- Newsgroups: sci.physics
- Subject: Re: Twins Paradox Resolved
- Message-ID: <1992Jul30.151451.12344@cs.ucf.edu>
- Date: 30 Jul 92 15:14:51 GMT
- Article-I.D.: cs.1992Jul30.151451.12344
- References: <Bs64Dz.Hw3@well.sf.ca.us>
- Sender: news@cs.ucf.edu (News system)
- Organization: University of Central Florida
- Lines: 55
-
- In article <Bs64Dz.Hw3@well.sf.ca.us> metares@well.sf.ca.us (Tom Van Flandern)
- writes:
- >
- > Earlier, I wrote:
- >
- > >> 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.
- >
- > Cute, but your point was lost. What is it that you find impossible to
- > believe?
- > a) SR
- > b) the need to give up on distant simultaneity
- > c) that apparent aging depends upon direction of travel
- > d) that other interpretations consistent with the experimental evidence
- > are also possible
- > e) something else
- >
-
- I should forget quoting from literature, the ease with which
- I can paste things from the Next Librarian distracts me from the
- issues at hand.
-
- Re-thinking about your statement, I realize that I have again
- misread you. My reading is to take b) as a corollary of a).
- But I think you seperate the two. Part of the mother's milk
- of relativity is to become suspicious of simultaneity and to
- handle any statements including "simultaneity" with kid gloves.
-
- Your use of the word "distant" seems to imply a distinction
- between the cases when the seperation of two events is spacelike
- from when it is timelike; "simultaneity" being an invariant concept
- in the former case. I guess if you assume this, then your
- argument leads to your conclusions. But simultaneity is just
- as suspect for spacelike intervals.
-
- I think I am correct in saying that c) is a specific case of d).
- I believe I am correct about SR being the unique theory that
- makes relativizes Maxwell's equations, ruling out any d) arrived
- at by the style of reasoning your adopt.
-
- Not to say that relativity is the last word, but revolution will
- come from another direction. Perhaps quantum gravity, perhaps
- another little noticed chink in physics' armor.
-
-
- --
- Thomas Clarke
- Institute for Simulation and Training, University of Central FL
- 12424 Research Parkway, Suite 300, Orlando, FL 32826
- (407)658-5030, FAX: (407)658-5059, clarke@acme.ucf.edu
-