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Re: New papers: SR versus ...

From Thomas Heger <ttt_heg@web.de>
Newsgroups sci.physics.relativity
Subject Re: New papers: SR versus ...
Date 2022-12-14 08:22 +0100
Message-ID <jvtbstFp72eU1@mid.individual.net> (permalink)
References (6 earlier) <56a24206-ff43-4280-90aa-396abdcb907an@googlegroups.com> <78f8182d-1554-4c48-9b3b-44e4dc89d9ccn@googlegroups.com> <e7ce8c58-9e9e-4f84-b8fa-b5b81a59d086n@googlegroups.com> <bccc1338-1d82-487c-8a70-b6e549aad436n@googlegroups.com> <wPednfd-8r4njwX-nZ2dnZfqlJxg4p2d@giganews.com>

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Am 13.12.2022 um 06:50 schrieb Tom Roberts:
> On 12/12/22 10:49 PM, Trevor Lange wrote:
>> General relativity does not say that the laws of physics take the same
>> form in terms of rotating or accelerating coordinate systems as they
>> do in terms of local standard inertial coordinate systems. Indeed they
>> do not.
>
> This is wrong. General Relativity, and indeed all of modern physics,
> state that the laws of physics are independent of coordinates. This is
> fundamental -- nature CLEARLY uses no coordinates, so no
> coordinate-dependent quantity can accurately model any natural phenomenon.


Why then did Einstein wrote so extensively about the influence of moving 
coordinate systems in SRT?

> You are confusing the laws of physics, which in GR are tensor equations,
> with projections of those equations onto various coordinate systems.

No, laws of nature are never equations!

You may eventually find equations, that are a good representation of 
such laws, but that wouldn't make these laws an equation.

> Certainly when the tensors are projected onto locally-inertial
> coordinates the results are quite different from projections onto
> accelerated or rotating coordinates. But the underlying laws are
> unaffected, because they are independent of coordinates.


They are also independent of the used mathematical constructs.

I personally don't like tensors.

Instead I try to promote a system for spacetime physics, which uses 
complex four vectors and no tensors.

..

TH

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New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-04 11:16 -0800
  Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-04 13:09 -0800
    Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-05 07:33 -0800
      Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-05 12:06 -0800
        Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-05 18:20 -0800
          Re: New papers: SR versus ... "Dono." <eggy20011951@gmail.com> - 2022-12-05 18:33 -0800
          Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-05 18:54 -0800
            Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-07 18:15 -0800
              Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-07 20:03 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:13 -0800
                Re: New papers: SR versus ... Tom Roberts <tjoberts137@sbcglobal.net> - 2022-12-12 23:50 -0600
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:14 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:17 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:21 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:23 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:24 -0800
                Re: New papers: SR versus ... "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-12-12 18:52 -0800
                Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-12 20:49 -0800
                Re: New papers: SR versus ... Tom Roberts <tjoberts137@sbcglobal.net> - 2022-12-12 23:50 -0600
                Re: New papers: SR versus ... Trevor Lange <trevorlange97@gmail.com> - 2022-12-12 22:12 -0800
                Re: New papers: SR versus ... Maciej Wozniak <maluwozniak@gmail.com> - 2022-12-13 04:17 -0800
                Re: New papers: SR versus ... Maciej Wozniak <maluwozniak@gmail.com> - 2022-12-13 03:41 -0800
                Re: New papers: SR versus ... Thomas Heger <ttt_heg@web.de> - 2022-12-14 08:22 +0100
              Re: New papers: SR versus ... beda pietanza <bedapietanza@gmail.com> - 2022-12-14 09:33 -0800
                Re: New papers: SR versus ... Fabio Brambilla <oaab@llbaboaa.am> - 2022-12-14 17:53 +0000
                Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-14 13:44 -0600
  Re: New papers: SR versus ... Thomas Heger <ttt_heg@web.de> - 2022-12-17 08:07 +0100
    Re: New papers: SR versus ... beda pietanza <bedapietanza@gmail.com> - 2022-12-19 05:54 -0800
      Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-19 14:03 -0600
        Re: New papers: SR versus ... Vitaliy Bazzoli <zvt@viavzl.oi> - 2022-12-19 22:05 +0000
          Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-19 16:09 -0600
            Re: New papers: SR versus ... Vitaliy Bazzoli <zvt@viavzl.oi> - 2022-12-19 22:21 +0000
              Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-19 17:37 -0600
                Re: New papers: SR versus ... Vitaliy Bazzoli <zvt@viavzl.oi> - 2022-12-20 00:00 +0000
                Re: New papers: SR versus ... Paul Alsing <pnalsing@gmail.com> - 2022-12-19 19:53 -0800
                Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-19 23:14 -0600
        Re: New papers: SR versus ... RichD <r_delaney2001@yahoo.com> - 2022-12-20 12:01 -0800
          Re: New papers: SR versus ... whodat <whodaat@void.nowgre.com> - 2022-12-20 14:34 -0600
          Re: New papers: SR versus ... beda pietanza <bedapietanza@gmail.com> - 2022-12-21 07:35 -0800
      Re: New papers: SR versus ... Thomas Heger <ttt_heg@web.de> - 2022-12-20 07:39 +0100
        Re: New papers: SR versus ... beda pietanza <bedapietanza@gmail.com> - 2022-12-20 03:24 -0800
          Re: New papers: SR versus ... Thomas Heger <ttt_heg@web.de> - 2022-12-21 09:43 +0100
            Re: New papers: SR versus ... beda pietanza <bedapietanza@gmail.com> - 2022-12-21 06:55 -0800
              Re: New papers: SR versus ... Thomas Heger <ttt_heg@web.de> - 2022-12-24 10:05 +0100

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