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Re: New rewritten version of 'annotated version of SRT'

From Thomas Heger <ttt_heg@web.de>
Newsgroups sci.physics.relativity
Subject Re: New rewritten version of 'annotated version of SRT'
Date 2022-03-04 08:41 +0100
Message-ID <j8du62F1bq9U1@mid.individual.net> (permalink)
References (9 earlier) <j768jtFci4pU1@mid.individual.net> <sur105$86e$1@dont-email.me> <1b647d5a-ab9a-4aab-8682-e2fd316ff9f6n@googlegroups.com> <j8be9mFh9agU1@mid.individual.net> <svq1vd$727$1@dont-email.me>

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Am 03.03.2022 um 10:32 schrieb Mikko:
> Earlier I had written:
>
>>>> You presented Einstein's use of small cross as a multiplication sign as
>>>> ans example of Einstein's "errors", presenting two claims:
>>>> 1. cross was used as the sign of cross product; and,
>>>> 2. cross was not used for any other product.
>>>> Now you say that you don't know whether your claims were true.
>
> On 2022-03-03 08:58:30 +0000, Thomas Heger said:
>
>> Now I took an obvious example, where the usual interpretation of a
>> symbol was different to what Einstein meant and called that an error,
>> because in this case the error was undebatable (thou small).
>
> Now you repeat the earler claims mentioned above as if you be no longer
> unsure whether they are true. However, you have offered no evidence to
> support them, so there is no reason to believe you.

This was about the question, whether or not the symbol x could be used 
for scalar multiplication in a scientific paper.

Cross products can only be applied to vectors, but we are uncertain, 
whether Einstein meant vectors or scalars.

Usually velocity is a vector quantity and mass is a scalar.

If Einstein used x in connection to both, we readers scratch our heads 
and try to figuere out, what was actually meant.

This is an error, because the author tells the reader, what he wants to 
say. This would require to distinguish vectors from scalars and other 
mathematical objects by certain signs.

Such sings were already common practise at that time, hence also 
requirred from Einstein.

But contrary to common practice such signs were missing. Instead an 
inappropriate sign for multiplication was used.

I could have chosen the more difficult case of missing sings for 
vectors, but took the easier case of the cross, which was inappropriate.


TH

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Thread

Re: New rewritten version of 'annotated version of SRT' JanPB <filmart@gmail.com> - 2022-03-02 16:07 -0800
  Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-03 09:58 +0100
    Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-03 11:32 +0200
      Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-04 08:41 +0100
        Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-04 09:57 -0500
        Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-04 19:27 +0200
          Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-05 20:16 +0100
            Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-06 12:08 +0200
              Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-06 21:20 +0100
                Re: New rewritten version of 'annotated version of SRT' Python <python@example.invalid> - 2022-03-06 21:55 +0100
                Re: New rewritten version of 'annotated version of SRT' Maciej Wozniak <maluwozniak@gmail.com> - 2022-03-06 22:04 -0800
                Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-07 16:04 +0200
                Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-07 18:42 +0100
                Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-07 14:38 -0500
                Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-08 07:39 +0100
                Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-08 03:16 -0500
                Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-08 21:04 +0100
                Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-08 21:10 +0000
                Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-09 06:45 +0100
                Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-09 14:13 +0000
                Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-08 19:15 -0500
                Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-08 11:10 +0200
                Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-08 21:17 +0100
                Nazi cretin Thomas Heger eats shit "Dono." <eggy20011951@gmail.com> - 2022-03-08 14:50 -0800
                Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-09 15:40 +0200
    Re: New rewritten version of 'annotated version of SRT' nospam@de-ster.demon.nl (J. J. Lodder) - 2022-03-03 12:09 +0100
    Re: New rewritten version of 'annotated version of SRT' JanPB <filmart@gmail.com> - 2022-03-03 15:33 -0800
      Re: New rewritten version of 'annotated version of SRT' Maciej Wozniak <maluwozniak@gmail.com> - 2022-03-03 21:42 -0800

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