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Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Mikko <mikko.levanto@iki.fi> Newsgroups: sci.physics.relativity Subject: Re: Relativistic definition Date: Fri, 26 Jul 2024 10:56:19 +0300 Organization: - Lines: 31 Message-ID: <v7vkr3$2ock0$1@dont-email.me> References: <i6e6RaE0RxCNtGlAaSfIYZlkB2s@jntp> <v7qg1r$1m7i4$1@dont-email.me> <D1zC2LIVJQmOuI_dPSRZKZCF4HY@jntp> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Fri, 26 Jul 2024 09:56:20 +0200 (CEST) Injection-Info: dont-email.me; posting-host="fa75eabbb3cefbf26de7acd229632feb"; logging-data="2896512"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/95fJe/Yy8sI7PmnTZBRL1" User-Agent: Unison/2.2 Cancel-Lock: sha1:rGGwLg3afeM04Irj/TyejzNZp1w= Bytes: 1873 On 2024-07-24 11:28:12 +0000, Richard Hachel said: > Le 24/07/2024 à 11:03, Mikko a écrit : >> On 2024-07-23 15:44:59 +0000, Richard Hachel said: >>> "If two mobiles, one in simple Galilean movement, >>> the other in uniformly accelerated movement with a start at rest, >>> cross an identical space, in identical observable times, >>> then their proper times will be equal." >> >> That sentence contains an undefined term "Galilean movement". >> Therefore no agreement is possible. >> >> Mikko > > Vous avez raison. > > Il est plus précis de dire : > "If two mobiles, one in simple uniform Galilean movement, > the other in uniformly accelerated movement with a start at rest, > cross an identical space, in identical observable times, > then their proper times will be equal." Not much better than the first attempt. The term "Galilean movenent" is still undefined. -- Mikko