Article View: sci.physics.relativity
Article #5516Re: SR cannot determine Contraction
From: Yanick Toutain
Date: Fri, 22 Feb 2008 07:22
Date: Fri, 22 Feb 2008 07:22
59 lines
4429 bytes
4429 bytes
On Feb 22, 7:36 am, Pentcho Valev <pva...@yahoo.com> wrote: > On Feb 22, 5:35 am, Tom Roberts <tjroberts...@sbcglobal.net> wrote in > sci.physics.relativity: > > > Peri of Pera wrote: > > > [... rephrasing of various aspects of my earlier statements] > > > Yes. > > > > The measurements of the coordinate points of a moving object by an > > > observer and applying the Lorentz contraction formula does not > > > constitute a valid measurement. > > > Hmmm. Making a measurement of the length of a moving object in the usual > > way DOES constitute a valid measurement, and one obtains the "contracted > > value". The "usual way" means having pre-positioned assistants mark the > > endpoints of the moving object simultaneously in the observer's frame, > > and then measuring the distance between the marks using rulers at rest > > in the observer's frame. > > Roberts Roberts you are still a freshman among hypnotists in Einstein > criminal cult and do not have the courage to give breathtaking > examples when explaining length contraction. Superior brothers replace > "marking the endpoints of the moving object simultaneously in the > observer's frame" with "closing both doors simultaneously" and so they > can trap a long train inside a short tunnel: > > http://www.youtube.com/watch?v=VSRIyDfo_mY&mode=related&search= > > and also a 80m long pole inside a 40m long barn: > > http://www.math.ucr.edu/home/baez/physics/Relativity/SR/barn_pole.html > "These are the props. You own a barn, 40m long, with automatic doors > at either end, that can be opened and closed simultaneously by a > switch. You also have a pole, 80m long, which of course won't fit in > the barn....So, as the pole passes through the barn, there is an > instant when it is completely within the barn. At that instant, you > close both doors simultaneously, with your switch. Of course, you open > them again pretty quickly, but at least momentarily you had the > contracted pole shut up in your barn." > > So Roberts Roberts, by trapping long things inside short things, > superior brothers are able to demonstrate the real grandeur of > Einstein's discoveries. > > Pentcho Valev > pva...@yahoo.com Pentcho, avez vous lu ma page sur l'équation qui prend la place de la transformation de Lorentz avec un temps absolu, des vitesses absolues et un délai de signal ? http://site.voila.fr/monsyte/de/SCIENCES/scphys/COURS/objectif/Cours_de_science_objective_Les_equations.htm Could you translate for English readers ? Please YT
Technical Details
Message-ID:
<9439e549-b867-46bb-bcba-88f57caa5637@e60g2000hsh.googlegroups.com>Path:
arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!e60g2000hsh.googlegroups.com!not-for-mailReferences:
<4d7a4156-1486-45a7-b7af-46b7ab1bc981@e10g2000prf.googlegroups.com> <MH_tj.57861$Pv2.27370@newssvr23.news.prodigy.net> <9bbace2d-2a7f-4de3-81d8-26cd6a343a7c@e10g2000prf.googlegroups.com> <HsCuj.1195$pl4.983@newssvr22.news.prodigy.net> <ac516c5f-37ef-430e-8aef-a32b91696c02@u10g2000prn.googlegroups.com> <mqrvj.10100$0o7.9927@newssvr13.news.prodigy.net> <c3da3b94-1e2b-49ae-b97b-6b947a1fc971@34g2000hsz.googlegroups.com>Show Full Headers
Complete Article Headers
X-Google-Thread: 10f545,cac579628f39e93d X-Google-Thread: 10b271,4ee0571d17ce45ea X-Google-Thread: fa4c1,4ee0571d17ce45ea X-Google-Thread: 1139f8,4ee0571d17ce45ea X-Google-Thread: f55d3,4ee0571d17ce45ea X-Google-Attributes: gid10f545,gid10b271,gidfa4c1,gid1139f8,gidf55d3,public,usenet X-Google-Language: ENGLISH,ASCII Path: arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!e60g2000hsh.googlegroups.com!not-for-mail From: Yanick Toutain <YanickToutain@gmail.com> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,fr.sci.maths,fr.sci.philo Subject: Re: SR cannot determine Contraction Date: Thu, 21 Feb 2008 23:22:20 -0800 (PST) Organization: http://groups.google.com Lines: 59 Message-ID: <9439e549-b867-46bb-bcba-88f57caa5637@e60g2000hsh.googlegroups.com> References: <4d7a4156-1486-45a7-b7af-46b7ab1bc981@e10g2000prf.googlegroups.com> <MH_tj.57861$Pv2.27370@newssvr23.news.prodigy.net> <9bbace2d-2a7f-4de3-81d8-26cd6a343a7c@e10g2000prf.googlegroups.com> <HsCuj.1195$pl4.983@newssvr22.news.prodigy.net> <ac516c5f-37ef-430e-8aef-a32b91696c02@u10g2000prn.googlegroups.com> <mqrvj.10100$0o7.9927@newssvr13.news.prodigy.net> <c3da3b94-1e2b-49ae-b97b-6b947a1fc971@34g2000hsz.googlegroups.com> NNTP-Posting-Host: 91.68.210.9 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1203664941 24938 127.0.0.1 (22 Feb 2008 07:22:21 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Fri, 22 Feb 2008 07:22:21 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: e60g2000hsh.googlegroups.com; posting-host=91.68.210.9; posting-account=1qbAGAkAAADcUtlizzXUEb5jUjfAdE2y User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11,gzip(gfe),gzip(gfe)