Article View: sci.physics.relativity
Article #7152Re: Is The Proper Acceleration of a Rigid Rod Possible?
From: Pentcho Valev
Date: Mon, 30 Jun 2008 15:22
Date: Mon, 30 Jun 2008 15:22
31 lines
2941 bytes
2941 bytes
On Jun 29, 8:01 pm, Tom Roberts <tjroberts...@sbcglobal.net> wrote in sci.physics.relativity: > [...] > > I'll answer the question in the subject: no. > > In relativity, "rigid" is impossible. But one could construct a "rod" > out of a series of small atoms which are arranged in sequence along its > length, and each atom is given an appropriate proper acceleration so at > all times the proper distance between adjacent atoms is constant. This > is as close as one can come to "rigid". When one does this for > acceleration along the length of the rod, each atom along its length > must be given a different proper acceleration. This is known as Born > rigid motion. > > So there is no "the" proper acceleration of a "rigid" rod. There must be > a different proper acceleration at each point along the rod. > > Tom Roberts Roberts Roberts just a single false axiom (Einstein's 1905 false light postulate) and an apparently infinite number of idiocies produced! Albert the Plagiarist did indeed deserve to become Divine Albert. But you are a somewhat enigmatic teacher Roberts Roberts: you should refer zombies to sources where the idiocies are analysed in depth: http://www.people.fas.harvard.edu/~djmorin/book.html Chapter 11, p. 45, Problem 26: "Break or not break?" Pentcho Valev pvalev@yahoo.com
Technical Details
Message-ID:
<609187c3-4cf7-4100-85f0-ff3189dc7f1c@m36g2000hse.googlegroups.com>Path:
arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!m36g2000hse.googlegroups.com!not-for-mailReferences:
<ce0bac40-3fa1-4fd9-950e-1bfa4fc8c552@m36g2000hse.googlegroups.com> <b8d8cf32-d00d-4a7d-8e53-fab46d04888c@b1g2000hsg.googlegroups.com> <36Q9k.11729$jI5.8864@flpi148.ffdc.sbc.com>Show Full Headers
Complete Article Headers
X-Google-Thread: 10f545,f0ad471cca742a8d X-Google-Thread: 10b271,f0ad471cca742a8d X-Google-Thread: 109d8a,f0ad471cca742a8d X-Google-Thread: f74ae,976b05a790e6c4ce,start X-Google-Thread: fa4c1,976b05a790e6c4ce,start X-Google-Attributes: gid10f545,gid10b271,gid109d8a,gidf74ae,gidfa4c1,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Path: arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!m36g2000hse.googlegroups.com!not-for-mail From: Pentcho Valev <pvalev@yahoo.com> Newsgroups: sci.physics.relativity,sci.physics,sci.math,sci.astro,fr.sci.physique Subject: Re: Is The Proper Acceleration of a Rigid Rod Possible? Date: Mon, 30 Jun 2008 08:22:22 -0700 (PDT) Organization: http://groups.google.com Lines: 32 Message-ID: <609187c3-4cf7-4100-85f0-ff3189dc7f1c@m36g2000hse.googlegroups.com> References: <ce0bac40-3fa1-4fd9-950e-1bfa4fc8c552@m36g2000hse.googlegroups.com> <b8d8cf32-d00d-4a7d-8e53-fab46d04888c@b1g2000hsg.googlegroups.com> <36Q9k.11729$jI5.8864@flpi148.ffdc.sbc.com> NNTP-Posting-Host: 89.3.109.60 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1214839343 6824 127.0.0.1 (30 Jun 2008 15:22:23 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 30 Jun 2008 15:22:23 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: m36g2000hse.googlegroups.com; posting-host=89.3.109.60; posting-account=Lz-LbgoAAABPDavKeW-eYeobwLHD_cvQ User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1),gzip(gfe),gzip(gfe)