Groups > sci.physics.relativity > #568035

Re: Watch problem

From	Thomas Heger <ttt_heg@web.de>
Newsgroups	sci.physics.relativity
Subject	Re: Watch problem
Date	2021-11-28 07:45 +0100
Message-ID	<j0gmrrFbhdU1@mid.individual.net> (permalink)
References	<R9GjEL1FIXnAIviXPOpB5G1yt-U@jntp> <snip5d$1mo7$1@gioia.aioe.org> <j08pvfFf51hU1@mid.individual.net> <sntt20$bm8$4@gioia.aioe.org>

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Am 27.11.2021 um 19:22 schrieb Nabor Nave:
> Thomas Heger wrote:
>
>>> synch procedure because these clocks are all spatially separated,  but
>>> though different it is not complicated.
>>
>> We could think about two clocks only, which are located at the center of
>> their coordinate system.
>
> coordinate systems has no centers.
>

Well...in a way...

I meant the point (zero, zero, zero), for instance.

I call this point 'center', even if this point could be relocated and 
another point can be regarded as 'center'.

The zero-spot is the point, from where the position vectors of the other 
points start.

I think, the position of the observer is a good choice for the zero 
spot, because then the zero spot could be called 'observer'.

This is an arbitrary setting, but the one which I usually chose.

The idea behind this setting is, that if the observer is located at the 
zero spot, then all position vectors start at him.

This is a good setting, because then the term 'space' (of all the other 
endpoints of all possible 'sight-vectors') coincides with what is called 
'past-light-cone'.

Now we usually call that 'sight-space' 'universe', even if it is only 
the space of the events, the observer could possibly see.

We only need to think, that also position vectors operate like light 
rays and do not connect with infinete velocity, but with c.

This view is different to the Euclidean space, where vectors are 
timeless, hence connect with infinite pace.

The disadvantage of Euclidean space: we cannot see with infinite speed, 
hence the content of Euclidean space is invisible. Therefore we usually 
call the own past-light-cone 'space' and our own position 'observer'.

TH

Thread

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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