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Path: ...!news.roellig-ltd.de!open-news-network.org!weretis.net!feeder8.news.weretis.net!pasdenom.info!from-devjntp Message-ID: <eSz70Yi5kNfROFnEqcEhT63f9RQ@jntp> JNTP-Route: nemoweb.net JNTP-DataType: Article Subject: Re: the notion of relativity of simultaneity References: <t5AySA2aWT46Ra7AsAZqm8Hc3GM@jntp> <Eo6FW0ebVNtRJTtSEACnwT1LEhc@jntp> <lm1kgtFln9eU4@mid.individual.net> Newsgroups: sci.physics.relativity JNTP-HashClient: bVNStAhFVIoALTtq1wqCapEnhRI JNTP-ThreadID: M03ir3sQnaKnoNUOGTo8wLgKNI8 JNTP-Uri: https://www.nemoweb.net/?DataID=eSz70Yi5kNfROFnEqcEhT63f9RQ@jntp User-Agent: Nemo/1.0 JNTP-OriginServer: nemoweb.net Date: Tue, 01 Oct 24 12:36:00 +0000 Organization: Nemoweb JNTP-Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36 Injection-Info: nemoweb.net; posting-host="e8cbf2474b472b9bb79db3dccb6a856bc1d05409"; logging-data="2024-10-01T12:36:00Z/9043770"; posting-account="4@nemoweb.net"; mail-complaints-to="julien.arlandis@gmail.com" JNTP-ProtocolVersion: 0.21.1 JNTP-Server: PhpNemoServer/0.94.5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-JNTP-JsonNewsGateway: 0.96 From: Richard Hachel <r.hachel@liscati.fr.invalid> Bytes: 2540 Lines: 40 Le 01/10/2024 à 08:52, Thomas Heger a écrit : > Am Dienstag000001, 01.10.2024 um 02:34 schrieb Python: >> Le 01/10/2024 à 00:52, Richard "Hachel" Lengrnd a écrit : >>> One of the most fundamental problems in the history of humanity and >>> the very basis of the notion of relativity of simultaneity: how to >>> synchronize two watches so that they give the same time at the same >>> present moment? >>> >>> A little explanation would have been welcome. >>> >>> Of course, in a Newtonian universe, it is not difficult. >>> >>> But in a relativistic universe where each observer has his own >>> hyperplane of present time? >> >> What do you mean by "hyperlane"? > > The set of all points, which could be connected to an events by a > hypothetical signal with infinite velocity builds actually a three > dimensional space. > > In RT-lingo, this is a hyperplane (of the present). > > Imagine you would 'flatten' space to a 2-dimensional sheet. > > > TH > >> ... Why do you answer him? You can see that he is crazy. He claims to be a great expert in relativity, but he is incapable of understanding what a simple "hyperplane" is. R.H.