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- Path: sparky!uunet!spool.mu.edu!uwm.edu!psuvax1!hsdndev!husc-news.harvard.edu!husc8!mcirvin
- From: mcirvin@husc8.harvard.edu (Matt McIrvin)
- Newsgroups: sci.physics
- Subject: Re: Special relativity is SOOO irritating!
- Message-ID: <mcirvin.724724687@husc8>
- Date: 19 Dec 92 00:24:47 GMT
- References: <D91ANDIV.92Dec15234743@astmatix.IDA.LiU.SE> <WOLF.92Dec18004505@doppel.first.gmd.de>
- Distribution: sci
- Lines: 23
- Nntp-Posting-Host: husc8.harvard.edu
-
- wolf@doppel.first.gmd.de (Wolfgang Koehler) writes:
-
- >In article <D91ANDIV.92Dec15234743@astmatix.IDA.LiU.SE> d91andiv@IDA.LiU.SE (Anders Ivner) writes:
-
- > Consider a staff, one meter long. Now, given the speed v it 'shrinks'
- > to half a meter. We then have a wall, and an easily controllable
- > hatch placed .75 meters from the wall. The staff passes through the
- > hatch, and we close the hatch behind it (BEFORE it hits the wall!)
- > The staff hits the wall, without being deformed (somewhat unrealistic!),
- > and since its speed now changes to 0 it is now fully 1 meters long.
- > What the **** happens????
-
- >Hello Anders,
- >you should read the sci.physics FAQ. It contains a similiar "paradox"
- >of SR, called "the barne and the pole". (And of course it's solution)
- >If you missed the FAQ, send me an email, I'll send it to you.
-
- Even better, read Taylor and Wheeler's _Spacetime Physics_. Extensive
- discussion of such things (including the dangers of assuming rigidity
- in an SR context) is contained therein, and worked out in a lucid manner.
- The barn and the pole, and many variations thereof, are resolved.
- --
- Matt McIrvin
-