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Re: local time

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Am 01.08.2021 um 15:52 schrieb Paparios:
> El domingo, 1 de agosto de 2021 a las 2:26:38 UTC-4, Thomas Heger escribió:
>> Am 30.07.2021 um 18:19 schrieb Paparios:
>
>>>> But other clocks at other locations could look like they would run
>>>> backwards, because 'other location' means also 'other local time'.
>>>
>>> Wrong, as every clock, at a given location, just ticks in the positive direction at 1 second/second. The most extreme case would be that of a spacecraft approaching a black hole event horizon. In that case, an observer here on Earth would receive signals from the spacecraft clocks, which are severely time dilated with respect to our clocks. In the limit, when the spacecraft reaches the event horizon, the spacecraft clocks would be seen to completely stop, while the astronauts there would see no time dilation (ie their clocks would continue to tick at 1 second/second). The movie Interstellar shows this effect.
>> 'Positive' is a relative measure.
>>
>
>   No it is not. In spacetime, the time coordinate goes from t=-∞ to t=+∞. But time only flows unidirectional from yesterday to tomorrow.


I compare a spacetime diagram with an Argand diagram, hence assume, that 
spacetime has properties of complex numbers.

The axis of time is essentially a count of something and gets real 
numbers, while the inverse gets imaginary units i, j and k.

Now we could also revert the picture and make time imaginary and the 
spacelike axes real.

Then we could also let time 'move sideways'.

Now we can place an observer there and that observer would see time like 
we see time, even if his entire world is rotated 'sideways'.

This idea is a difficult tricky to understand, but I have written kind 
of 'book':

https://docs.google.com/present/view?id=dd8jz2tx_3gfzvqgd6

In this picture time is not just a universal parameter, but a local 
measure. And that time can be 'rotated sideways', which would cause 
several unusual effects.



>> We all advance into the positive direction in time, whereever we are.
>> But we cannot be everywhere.
>>
>> If we are somewhere, we advance into the positive direction in time. But
>> this direction is positive only there and not necessarily everywhere else.
>>
>> Relativity uses Lorentz transformation. and a Lorentz transform could be
>> imagined as complex rotation of the axis of time.
>>
>> Now every location has such an axis, because every location has a local
>> time. Because two locations can have an axis of time in an angle, the
>> angle could eventually exceed 180 °, what is actually a rotation into
>> the opposite direction.
>>
>
> But it is not. A basic spacetime diagram uses coordinates (ct,x), where x is horizontal and ct is vertical. Usually c is taken to be 1, so x and t are in the same distance units (light years). A moving body will have coordinates (t',x') related to (t,x) through the LTE. The higher the speed v of the body is, both coordinates t' and x' are closer to the line t=x (which is the speed of light). Those t' and x' lines look as a rotation but that rotation can not exceed the limit of t=x. Therefore, within those constraints, the coordinate t' is still moving from yesterday to tomorrow.


This is still based on a single parameter for time, which must therefore 
be universally valid.

I want time to be a local measure and that local time goes uniformly 
from minus to plus.

>> This direction is still positive, because time is a local measure and
>> only the time of an observed system could run backwards.


Whereever you are, your local time runs forward at the same rate of 1s 
per s.

But these seconds are not always the same and they don't necessarily run 
in the same direction.

TH

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local time Thomas Heger <ttt_heg@web.de> - 2021-07-29 07:27 +0200
  Re: local time Paparios <mrios@ing.puc.cl> - 2021-07-29 06:29 -0700
    Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-07-29 06:33 -0700
    Re: local time Gary Harnagel <hitlong@yahoo.com> - 2021-07-29 08:02 -0700
      Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-07-29 08:10 -0700
      Re: local time Uetake Matsumura <uetma@unijap2.jp> - 2021-07-29 19:04 +0000
        Re: local time Uetake Matsumura <uetma@unijap2.jp> - 2021-07-29 19:35 +0000
    Re: local time Thomas Heger <ttt_heg@web.de> - 2021-07-30 09:14 +0200
      Re: local time Julio Di Egidio <julio@diegidio.name> - 2021-07-30 03:08 -0700
        Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-07-30 03:13 -0700
          Re: local time Julio Di Egidio <julio@diegidio.name> - 2021-07-30 03:21 -0700
            Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-07-30 05:00 -0700
        Re: local time Gabriella Bouttier <gabbo@nncastr2.au> - 2021-07-30 16:03 +0000
        Re: local time Thomas Heger <ttt_heg@web.de> - 2021-08-01 08:34 +0200
      Re: local time Paparios <mrios@ing.puc.cl> - 2021-07-30 09:19 -0700
        Re: local time Thomas Heger <ttt_heg@web.de> - 2021-08-01 08:26 +0200
          Re: local time Paparios <mrios@ing.puc.cl> - 2021-08-01 06:52 -0700
            Re: local time Buck Ehler <buke@unicwta.pa> - 2021-08-01 14:29 +0000
            Re: local time Thomas Heger <ttt_heg@web.de> - 2021-08-02 08:50 +0200
  Re: local time Julio Di Egidio <julio@diegidio.name> - 2021-07-29 06:41 -0700
    Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-07-29 07:38 -0700
      Re: local time Emmett Bradshaw <emmbs@nntunic.ki> - 2021-07-29 14:43 +0000
  Re: local time Emmett Bradshaw <emmbs@nntunic.ki> - 2021-07-29 14:07 +0000
    Re: local time Emmett Bradshaw <emmbs@nntunic.ki> - 2021-07-29 14:21 +0000
    Re: local time Julio Di Egidio <julio@diegidio.name> - 2021-07-29 07:30 -0700
      Re: local time Emmett Bradshaw <emmbs@nntunic.ki> - 2021-07-29 14:40 +0000
  Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-07-30 10:44 -0700
    Re: local time Thomas Heger <ttt_heg@web.de> - 2021-08-01 08:32 +0200
  Re: local time Ken Seto <setoken47@gmail.com> - 2021-07-31 04:07 -0700
    Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-01 10:45 -0400
      Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 06:02 -0700
        Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 13:08 +0000
          Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-02 06:12 -0700
          Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 06:26 -0700
            Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 14:31 +0000
              Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 08:28 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 15:37 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 10:04 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 17:36 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 12:50 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 20:01 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 14:06 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-02 21:34 +0000
                Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-08-02 15:38 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-03 04:57 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-03 13:04 +0000
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-03 13:35 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-03 07:48 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-03 15:46 +0000
                Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-08-03 11:47 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-04 07:28 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-04 14:54 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-04 08:46 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-04 17:31 +0000
                Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-08-04 11:03 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-04 13:20 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-04 21:15 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-05 05:30 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-05 14:45 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-05 08:59 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-05 16:17 +0000
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-05 09:48 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-05 17:09 +0000
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-05 10:20 -0700
                Re: local time Python <python@python.invalid> - 2021-08-05 19:29 +0200
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-05 12:15 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-06 07:13 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-06 14:49 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-07 05:22 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-07 12:58 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-07 06:58 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-07 14:10 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-09 08:22 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-09 15:41 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-09 12:27 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-09 20:24 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-10 05:32 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-10 13:12 +0000
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-10 13:24 -0400
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-10 17:37 +0000
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-10 15:06 -0400
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-10 23:24 -0700
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-10 23:24 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-11 06:58 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-11 14:01 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-11 07:27 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-11 15:06 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-11 08:15 -0700
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-11 11:33 -0400
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-11 15:50 +0000
                Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-08-11 10:40 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-11 13:51 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-11 21:21 +0000
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-18 10:23 -0700
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-19 01:53 -0400
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-19 16:46 +0000
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-11 11:26 -0400
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-09 11:45 -0400
                Re: local time "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2021-08-09 10:48 -0700
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-09 23:06 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-07 05:41 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-07 12:58 +0000
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-06 11:47 -0400
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-07 05:30 -0700
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-06 11:41 -0400
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-07 05:33 -0700
                Re: local time Odd Bodkin <bodkinodd@gmail.com> - 2021-08-07 12:58 +0000
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-06 11:39 -0400
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-02 17:15 -0400
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-02 11:47 -0400
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-02 09:02 -0700
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 09:36 -0700
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-02 13:17 -0400
                Re: local time Ken Seto <setoken47@gmail.com> - 2021-08-02 09:45 -0700
                Re: local time Michael Moroney <moroney@world.std.spaamtrap.com> - 2021-08-02 13:31 -0400
                Re: local time Thanh Walters <hwnta@uucnstv.cr> - 2021-08-02 18:00 +0000
                Re: local time Maciej Wozniak <maluwozniak@gmail.com> - 2021-08-02 11:02 -0700

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