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Groups > sci.physics.relativity > #579633
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: New rewritten version of 'annotated version of SRT' |
| Date | 2022-03-06 21:20 +0100 |
| Message-ID | <j8kjccF9sgdU1@mid.individual.net> (permalink) |
| References | (13 earlier) <svq1vd$727$1@dont-email.me> <j8du62F1bq9U1@mid.individual.net> <svti5l$47e$1@dont-email.me> <j8hr7dFoasjU1@mid.individual.net> <t02167$pgn$1@dont-email.me> |
Am 06.03.2022 um 11:08 schrieb Mikko: > On 2022-03-05 19:16:00 +0000, Thomas Heger said: > >> Am 04.03.2022 um 18:27 schrieb Mikko: >> >>> Here you just repeat your claim but still without any evidence. >>> >> >> https://en.wikipedia.org/wiki/Cross_product >> >> quote >> >> "In mathematics, the cross product or vector product (occasionally >> directed area product, to emphasize its geometric significance) is a >> binary operation on two vectors in a three-dimensional oriented >> Euclidean vector space (named here E ), and is denoted by the symbol × " >> >> /endquote > > That only reports the modern usage, and only about the cross product. It > does > not say that a similar symbol cannot be used for ordinary multiplication. > And it does not say what symbols were used 100 years earlier in Germany. > At that time the notational convetions were not as universal as they are > now. Einstein had serious trouble with the difference between vectors and scalars in many cases in the same text. That cross was only an obvious example. But as I have written a lot of comments, you can also find the other instances of similar problems in my annotations. see here https://drive.google.com/file/d/1IiF0r7Rl4eLEMLOyRorKke6iDwFpWvxl/view?usp=sharing > So you still have not supported either of your claims > 1. cross was used as the sign of cross product; and, > 2. cross was not used for any other product. > with any evicence. > OK, you are absolute right, that the cross was used in Germany as general sign for multiplication in that era. So far so good. But theoretical physics is mainly mathematical by nature, hence the rules in that realm are much more rigorous than for the common people. TH
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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' Thomas Heger <ttt_heg@web.de> - 2022-03-10 07:57 +0100
Re: New rewritten version of 'annotated version of SRT' Michael Moroney <moroney@world.std.spaamtrap.com> - 2022-03-10 03:36 -0500
Re: New rewritten version of 'annotated version of SRT' "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2022-03-10 12:46 +0100
Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-10 11:48 +0000
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-11 06:57 +0100
Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-11 13:03 +0000
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-12 08:34 +0100
Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-12 15:06 +0000
Re: New rewritten version of 'annotated version of SRT' Python <python@example.invalid> - 2022-03-11 16:04 +0100
Re: New rewritten version of 'annotated version of SRT' Maciej Wozniak <maluwozniak@gmail.com> - 2022-03-11 11:06 -0800
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-12 08:10 +0100
Re: New rewritten version of 'annotated version of SRT' Python <python@example.invalid> - 2022-03-12 15:24 +0100
Re: New rewritten version of 'annotated version of SRT' Maciej Wozniak <maluwozniak@gmail.com> - 2022-03-12 08:09 -0800
Re: New rewritten version of 'annotated version of SRT' Python <python@example.invalid> - 2022-03-12 17:12 +0100
Re: New rewritten version of 'annotated version of SRT' Maciej Wozniak <maluwozniak@gmail.com> - 2022-03-12 08:37 -0800
Re: New rewritten version of 'annotated version of SRT' "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2022-03-12 21:17 +0100
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' Thomas Heger <ttt_heg@web.de> - 2022-03-10 08:04 +0100
Re: New rewritten version of 'annotated version of SRT' Mikko <mikko.levanto@iki.fi> - 2022-03-10 10:40 +0200
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-11 07:10 +0100
Re: New rewritten version of 'annotated version of SRT' Odd Bodkin <bodkinodd@gmail.com> - 2022-03-11 13:52 +0000
Re: New rewritten version of 'annotated version of SRT' Thomas Heger <ttt_heg@web.de> - 2022-03-12 08:42 +0100
Re: New rewritten version of 'annotated version of SRT' "Dono." <eggy20011951@gmail.com> - 2022-03-11 07:35 -0800
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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