Path: ...!feeds.phibee-telecom.net!weretis.net!feeder8.news.weretis.net!pasdenom.info!from-devjntp Message-ID: JNTP-Route: nemoweb.net JNTP-DataType: Article Subject: Re: the notion of relativity of simultaneity References: <3_55BPOgqiL20L5rUo2xG_Vp8ZQ@jntp> Newsgroups: sci.physics.relativity JNTP-HashClient: if1wIq19OsjP2xsqyUmt6rQI2PU JNTP-ThreadID: M03ir3sQnaKnoNUOGTo8wLgKNI8 JNTP-Uri: https://www.nemoweb.net/?DataID=VCVzXLLkmZZhlxiJ0ihG_YjYWe0@jntp User-Agent: Nemo/1.0 JNTP-OriginServer: nemoweb.net Date: Wed, 02 Oct 24 20:07:17 +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="2024-10-02T20:07:17Z/9045623"; 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 Bytes: 1977 Lines: 19 Le 02/10/2024 à 20:54, Thomas Heger a écrit : > > 'Hyperplane' has a sigtly different meaning than 'hyperplane of present > time'. > > But apparently your question was about the 'hyperplane of the present' > in context of RT and not about the general case of a hyperplane in > mathematics. > > In case of RT, my explanation was correct! > > > TH The two notions are similar. "Hyperplane of present time" and "hyperplane of simultaneity" are synonymous (whatever the theory used, Newton, Einstein, Hachel). R.H.