Deutsch English Français Italiano |
<mlQVGl0G2zoQ-xeSWVDB_QbELXo@jntp> View for Bookmarking (what is this?) Look up another Usenet article |
Path: ...!weretis.net!feeder6.news.weretis.net!feeder8.news.weretis.net!pasdenom.info!from-devjntp Message-ID: <mlQVGl0G2zoQ-xeSWVDB_QbELXo@jntp> JNTP-Route: news2.nemoweb.net JNTP-DataType: Article Subject: Re: [SR] Their proper times will necessarily be equal References: <uVqLA5I1wpq_Hog1Ofr-W0SOaIo@jntp> <RvOdnV9ZSY5Jb777nZ2dnZfqlJ-dnZ2d@giganews.com> <OSudna7sofeDh7j7nZ2dnZfqnPSdnZ2d@giganews.com> <v038vn$bnb4$1@dont-email.me> Newsgroups: sci.physics.relativity JNTP-HashClient: HM1lxsCZgUFdtwDQuW2Pe2fXYzw JNTP-ThreadID: hnFC7-XWOr5HOfbF-3j-xq8SKd0 JNTP-Uri: http://news2.nemoweb.net/?DataID=mlQVGl0G2zoQ-xeSWVDB_QbELXo@jntp User-Agent: Nemo/0.999a JNTP-OriginServer: news2.nemoweb.net Date: Sun, 21 Apr 24 21:07:31 +0000 Organization: Nemoweb JNTP-Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Injection-Info: news2.nemoweb.net; posting-host="e8cbf2474b472b9bb79db3dccb6a856bc1d05409"; logging-data="2024-04-21T21:07:31Z/8825942"; posting-account="4@news2.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 <bts.orange@licorne-bleue.fr> Bytes: 3612 Lines: 49 Le 21/04/2024 à 16:48, Python a écrit : > Le 21/04/2024 à 15:53, Ross Finlayson a écrit : >> On 04/20/2024 09:52 AM, Tom Roberts wrote: >>> On 4/13/24 1:36 AM, Richard Hachel wrote: >>>> "If two different observers travel an identical path in equal >>>> observable times, then their proper times will necessarily be equal. >>> >>> Yes, of course. >>> >>> My response differs from others because I interpret your context >>> differently. >>> >>> Since you mention "proper times", your context must be relativity; it >>> does not matter whether SR or GR, because "travel an identical path" >>> means they travel along a single worldline through spacetime -- i.e. >>> they are always co-located and co-moving, so of course their elapsed >>> proper times are equal (counting from any event on their worldline). >>> >>> Your "in equal observable times" is redundant. For any >>> observer this directly follows from them following the >>> same worldline through spacetime. >>> >>> Note this is essentially the first time I agree with Hachel. I doubt >>> that he understands why what he wrote is actually correct, because he >>> followed it with a bunch of obfuscatory nonsense. >>> >>>> [... enormous amount of gibberish ignored.] >>> >>> Tom Roberts >> >> Can you help further explain for the rest of us why >> this isn't necessarily the usual interpretation or >> why it sort of doesn't arrive at the same results of >> some of the usual thought experiments like the traveling twins? > > In the twins scenario, twins does not share the same > space-time path. We may not have the same space-time path, and have the same proper time, the same path, and the same improper time (for other observers). Note that "space-time path", I don't understand the geometric concept very well. Relativist theorists must say clear things if they want to be understood. However, I see that their geometry is not entirely clear and easily understandable. Above all, I see results that are as false as they are strange appearing at the end of the race. All this is not normal and deserves more serious reflection. R.H.