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Groups > sci.physics.relativity > #596598
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: SR without panties |
| Date | 2022-12-01 10:33 +0100 |
| Message-ID | <juranjFierrU1@mid.individual.net> (permalink) |
| References | (2 earlier) <juj493FagnlU1@mid.individual.net> <julr4fFn8gjU1@mid.individual.net> <jun2bhFt378U1@mid.individual.net> <juogu6F5a50U1@mid.individual.net> <jupj2hFa0thU1@mid.individual.net> |
Am 30.11.2022 um 18:43 schrieb whodat: >>>>> If you use the term "relative to" then there is no + or -. As a >>>>> simple "difference" the number is absolute. There are workarounds >>>>> that can get you to arithmetic differences. I realize this is a >>>>> sort of nitpick, but I think it is an important one. >>>> ??? >>>> >>>> To me this sounds like nonsense! >>> >>> >>> Of course it does, but then you lack the basic essential skills >>> essential to understanding such elementary things. Please find >>> pastimes better suited to your abilities. Thanks. >> >> >> What you call 'basic skills' apparently includes to call negative >> numbers 'positive'. >> >> I cannot follow you here, because to me this sounds disgusting. >> >> In physics velocity is always a vector and has always a direction. > > Velocity can be modeled as a vector. The OP problem addresses motion of > one object relative to another. Direction plays no role in the posted > question. To do so now is a fallacy called moving the goalposts. ??? You mentioned 'motion of one object relative to another' and that this is the topic under consideration. I would agree and use the usual concept of velocity for this situation. But you actually flatten me by stating, that direction plays no role. >> If you like to address the amount, you could do so and omit the sign >> and direction by writing |v|. >> >> If you don't, v is a vector. >> >> TH > > Speed is never negative. Speed has magnitude and direction. NO! 'Speed' is the quantity an odometer measures. This quantity is independent of direction. > "-" is not a direction. That depends... 'direction' is a geometrical term, which is usually associated with Euclidean space. But other spaces are thinkable, where only two directions exist: '+' and '-'. ... TH
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SR without panties beda pietanza <bedapietanza@gmail.com> - 2022-11-27 15:43 -0800
Re: SR without panties rotchm <rotchm@gmail.com> - 2022-11-27 17:38 -0800
Re: SR without panties rotchm <rotchm@gmail.com> - 2022-11-27 17:42 -0800
Re: SR without panties beda pietanza <bedapietanza@gmail.com> - 2022-11-28 01:43 -0800
Re: SR without panties Maciej Wozniak <maluwozniak@gmail.com> - 2022-11-28 01:53 -0800
Re: SR without panties Volney <volney@invalid.invalid> - 2022-11-28 01:28 -0500
Re: SR without panties whodat <whodaat@void.nowgre.com> - 2022-11-28 00:54 -0600
Re: SR without panties Thomas Heger <ttt_heg@web.de> - 2022-11-29 08:36 +0100
Re: SR without panties beda pietanza <bedapietanza@gmail.com> - 2022-11-29 02:33 -0800
Re: SR without panties whodat <whodaat@void.nowgre.com> - 2022-11-29 12:46 -0600
Re: SR without panties Thomas Heger <ttt_heg@web.de> - 2022-11-30 09:01 +0100
Re: SR without panties whodat <whodaat@void.nowgre.com> - 2022-11-30 11:43 -0600
Re: SR without panties Thomas Heger <ttt_heg@web.de> - 2022-12-01 10:33 +0100
Re: SR without panties Mitch Leoni <nien@iltcntco.ws> - 2022-12-01 16:15 +0000
Re: SR without panties Thomas Heger <ttt_heg@web.de> - 2022-12-02 08:04 +0100
Re: SR without panties Maciej Wozniak <maluwozniak@gmail.com> - 2022-11-27 23:09 -0800
Re: SR without panties beda pietanza <bedapietanza@gmail.com> - 2022-11-29 02:23 -0800
Re: SR without panties Volney <volney@invalid.invalid> - 2022-11-29 21:52 -0500
Re: SR without panties Maciej Wozniak <maluwozniak@gmail.com> - 2022-11-29 22:40 -0800
Re: SR without panties beda pietanza <bedapietanza@gmail.com> - 2022-11-30 03:47 -0800
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