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Groups > sci.physics.relativity > #568143
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: Watch problem |
| Date | 2021-11-29 08:24 +0100 |
| Message-ID | <j0jdgrFg3p2U1@mid.individual.net> (permalink) |
| References | (1 earlier) <snip5d$1mo7$1@gioia.aioe.org> <j08pvfFf51hU1@mid.individual.net> <sntt20$bm8$4@gioia.aioe.org> <j0gmrrFbhdU1@mid.individual.net> <so0o0u$1js3$3@gioia.aioe.org> |
Am 28.11.2021 um 21:15 schrieb Chason Aceta: > Thomas Heger wrote: > >>> coordinate systems has no centers. >>> >> Well...in a way... >> I meant the point (zero, zero, zero), for instance. > > that's origo or origin, not center. Kindergarten stuff. > I'm actually German and English is a second language for me. Therefore I use eventually wrong words or words with wrong meanings. The term 'center' I use for 'the central point of something'. Possibly this is not correct, but I meant actually that. This central point gets the coordinates (0, 0, 0) in a 3-dimensional non-Euclidean space, which we usually call 'Universe'. This IS actually the center of the own 'space of observations', because all rays seen arrive actually there. This 3D-space has no real center, because the observer could be moved to any desired location and watch the universe from there, but the space of observations obviously has. This point is the point 'here and now', which therefore gets the four-vector (0,0,0,0) (coordinates meant as relative to the observer). This point is the center of the co-moving coordinate system, which the observer usually uses. The real universe (which is mainly not visible) has no center and no zero spot. The real universe is infinite in space and time, because it undergoes a process, where it 'folds inside out'. The observer experiences this as space and time, just by being somewhere. That spot 'somewhere' serves then as center of the universe, which is special for the observer in question. TH
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Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-22 22:25 +0000
Re: Watch problem robby <me@pla.net.invalid> - 2021-11-23 08:15 +0100
Re: Watch problem Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-11-23 08:18 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-11-23 00:57 -0800
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-23 13:09 +0000
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-11-23 05:37 -0800
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-23 20:39 +0000
Re: Watch problem Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-11-24 01:44 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-24 12:25 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-24 17:24 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-25 13:46 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-25 14:09 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-25 16:19 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-25 19:52 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-26 02:20 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-26 14:24 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-26 14:37 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-26 18:18 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-26 19:34 +0000
Re: Watch problem rotchm <rotchm@gmail.com> - 2021-11-26 11:45 -0800
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-26 21:32 +0000
Re: Watch problem rotchm <rotchm@gmail.com> - 2021-11-26 14:02 -0800
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-28 20:49 +0000
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-28 20:47 +0000
Re: Watch problem "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2021-11-28 10:03 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-28 14:06 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-28 14:13 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-28 14:49 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-28 15:11 +0000
Re: Watch problem rotchm <rotchm@gmail.com> - 2021-11-28 06:13 -0800
Re: Watch problem Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-11-28 10:53 -0500
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-28 16:32 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-01 15:57 +0000
Re: Watch problem Harif Kuloo <bbcs@uioas.ar> - 2021-12-02 19:42 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-28 19:13 +0000
Re: Watch problem Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-11-28 20:49 -0500
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-29 13:53 +0000
Re: Watch problem Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-11-29 11:06 -0500
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-29 17:14 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-29 16:52 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-29 17:08 +0000
Re: Watch problem Python <python@python.invalid> - 2021-11-30 00:10 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-30 13:04 +0000
Re: Watch problem Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-11-30 10:33 -0500
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-30 16:41 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-30 16:51 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-30 18:08 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-30 18:44 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-30 18:55 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-30 19:30 +0000
Re: Watch problem Python <python@python.invalid> - 2021-11-30 23:00 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-11-30 23:12 -0800
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-01 16:13 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-01 15:29 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-25 14:47 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-25 16:19 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-25 19:56 +0000
Re: Watch problem Python <python@python.invalid> - 2021-11-25 21:02 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-11-25 20:52 +0000
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-11-26 02:20 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-11-25 07:49 +0100
Re: Watch problem Nabor Nave <er@cwe.re> - 2021-11-27 18:22 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-11-28 07:45 +0100
Re: Watch problem rotchm <rotchm@gmail.com> - 2021-11-28 06:04 -0800
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-28 20:01 +0000
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-28 20:15 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-11-29 08:24 +0100
Re: Watch problem rotchm <rotchm@gmail.com> - 2021-11-29 06:24 -0800
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-29 23:03 +0000
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-29 23:13 +0000
Re: Watch problem Python <python@python.invalid> - 2021-11-30 00:18 +0100
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-29 23:27 +0000
Re: Watch problem Chason Aceta <pipre@cvbe.er> - 2021-11-29 23:23 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-01 09:23 +0100
Re: Watch problem Justo Lugo <rety@cvb.rt> - 2021-12-01 10:47 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-02 07:53 +0100
Re: Watch problem Python <python@python.invalid> - 2021-12-02 10:06 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-02 04:04 -0800
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-03 09:23 +0100
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-03 09:47 +0100
Re: Watch problem Python <python@python.invalid> - 2021-12-03 10:47 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-03 02:11 -0800
Re: Watch problem Harif Kuloo <bbcs@uioas.ar> - 2021-12-03 12:12 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-04 16:21 +0000
Re: Watch problem Harif Kuloo <bbcs@uioas.ar> - 2021-12-03 12:02 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-04 07:42 +0100
Re: Watch problem Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-12-04 02:30 -0500
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-04 01:15 -0800
Re: Watch problem Python <python@python.invalid> - 2021-12-04 14:29 +0100
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-05 21:38 +0100
Re: Watch problem Odd Bodkin <bodkinodd@gmail.com> - 2021-12-04 16:58 +0000
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-04 11:29 -0800
Re: Watch problem Python <python@python.invalid> - 2021-12-04 20:06 +0100
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-05 20:47 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-04 16:41 +0000
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-04 16:51 +0000
Re: Watch problem Python <python@python.invalid> - 2021-12-05 13:21 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-05 13:08 +0000
Re: Watch problem Python <python@example.invalid> - 2021-12-07 16:42 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-07 07:51 -0800
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-07 16:47 +0000
Re: Watch problem Reese Page <uteb@dlwcrt.ca> - 2021-12-07 16:53 +0000
Re: Watch problem Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-12-08 03:20 +0100
Re: Watch problem Reese Page <uteb@dlwcrt.ca> - 2021-12-08 20:39 +0000
Re: Watch problem Reese Page <uteb@dlwcrt.ca> - 2021-12-07 16:48 +0000
Re: Watch problem Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-12-08 03:22 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-07 22:38 +0000
Re: Watch problem Python <python@example.invalid> - 2021-12-07 23:56 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-05 07:06 -0800
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-08 08:53 +0100
Re: Watch problem Python <python@example.invalid> - 2021-12-08 12:56 +0100
Re: Watch problem Maciej Wozniak <maluwozniak@gmail.com> - 2021-12-08 04:35 -0800
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-08 13:47 +0000
Re: Watch problem Thomas Heger <ttt_heg@web.de> - 2021-12-10 06:49 +0100
Re: Watch problem Richard Hachel <r.hachel@tiscali.fr> - 2021-12-01 16:03 +0000
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