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Groups > sci.physics.relativity > #371476
| From | Poutnik <poutnik4nntp@gmail.com> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: On length contraction |
| Date | 2015-12-06 08:41 +0100 |
| Organization | Good company |
| Message-ID | <n40on4$o3e$1@dont-email.me> (permalink) |
| References | <480b34d8-19e3-4189-a293-4cf298956389@googlegroups.com> <dci654Fj075U1@mid.individual.net> |
Dne 06/12/2015 v 08:24 Thomas Heger napsal(a): > > There is a circular definition hidden in the term 'length'. It there is, you would not be able to tell how is 1 m long. Like y = 3.x, x=y/3, how much is y ? This is circular definition. > > The meter was once defined by a Platin-Iridum bar in Paris and was meant > as 1/10000 of the distance from pole to equator. > > This was a very pragmatic definition, but difficult to use, since copies > of this bar were very expensive. No, it was abandoned because of low accuracy and long term drift, limiting the measurements where the accuracy was already limited just by accuracy of meter definition. > > Then the speed of light was used to define length and a certain wave to > measure time. > > Now this is 'circular' and such a length could eventually shrink. It would be circular, if length, derived from light speed, was than used to define light speed. What is not the case. Referring to the trivial example above, there were used the first-like equation in past, the second-like equation today, but never both, to become circular. > Now this is 'circular' and such a length could eventually shrink. The meter standard rod was shrinking all the time. It caused the light speed was slowly raising. -- Poutnik ( the Czech word for a wanderer ) Knowledge makes great men humble, but small men arrogant.
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On length contraction kenseto <setoken@att.net> - 2015-12-05 07:55 -0800
Re: On length contraction Maciej Woźniak <mlwozniak@wp.pl> - 2015-12-05 18:40 +0100
Re: On length contraction kenseto <setoken@att.net> - 2015-12-05 15:49 -0800
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-05 22:39 -0600
Re: On length contraction Maciej Woźniak <mlwozniak@wp.pl> - 2015-12-06 10:28 +0100
Re: On length contraction alsor@interia.pl - 2015-12-06 05:40 -0800
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-06 09:03 -0600
Re: On length contraction alsor@interia.pl - 2015-12-09 02:37 -0800
Re: On length contraction fuller.david@hotmail.com - 2015-12-06 08:14 -0800
Re: On length contraction fuller.david@hotmail.com - 2015-12-06 08:27 -0800
Re: On length contraction fuller.david@hotmail.com - 2015-12-06 10:37 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-06 06:21 -0800
Re: On length contraction rotchm <rotchm@gmail.com> - 2015-12-06 08:19 -0800
Stephane Baune tries to correct Ken Shito and, in the process, embarrasses himself "Dono," <sa_ge@comcast.net> - 2015-12-07 08:35 -0800
Re: On length contraction Thomas Heger <ttt_heg@web.de> - 2015-12-06 08:24 +0100
Re: On length contraction Poutnik <poutnik4nntp@gmail.com> - 2015-12-06 08:41 +0100
Re: On length contraction kenseto <setoken@att.net> - 2015-12-06 07:06 -0800
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-06 09:20 -0600
Re: On length contraction Thomas Heger <ttt_heg@web.de> - 2015-12-06 21:43 +0100
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-07 09:46 -0600
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-06 15:09 -0600
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-07 09:49 -0600
Re: On length contraction rotchm <rotchm@gmail.com> - 2015-12-06 08:10 -0800
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-07 10:01 -0600
Re: On length contraction rotchm <rotchm@gmail.com> - 2015-12-07 08:28 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-07 10:57 -0600
Re: On length contraction mlwozniak@wp.pl - 2015-12-07 22:58 -0800
Re: On length contraction Thomas Heger <ttt_heg@web.de> - 2015-12-08 08:44 +0100
Re: On length contraction kenseto <setoken@att.net> - 2015-12-08 14:33 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-08 17:56 -0600
Re: On length contraction moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-12-10 20:07 +0000
Re: On length contraction kenseto <setoken@att.net> - 2015-12-10 13:13 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-10 17:19 -0600
Re: On length contraction moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-12-11 02:45 +0000
Re: On length contraction kenseto <setoken@att.net> - 2015-12-10 21:11 -0800
Re: On length contraction rotchm <rotchm@gmail.com> - 2015-12-11 06:57 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-11 19:20 -0800
Re: On length contraction moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-12-11 19:55 +0000
Re: On length contraction Plexippus Kritikos <plexik@laertesegidio.org> - 2015-12-11 23:25 +0000
Re: On length contraction kenseto <setoken@att.net> - 2015-12-11 19:25 -0800
Re: On length contraction pnalsing@gmail.com - 2015-12-11 19:48 -0800
Re: On length contraction pnalsing@gmail.com - 2015-12-13 14:33 -0800
Re: On length contraction moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-12-12 17:27 +0000
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-14 10:12 -0600
Re: On length contraction kenseto <setoken@att.net> - 2015-12-10 21:08 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-11 08:04 -0600
Re: On length contraction kenseto <setoken@att.net> - 2015-12-08 14:26 -0800
Re: On length contraction Plexippus Kritikos <plexik@laertesegidio.org> - 2015-12-08 22:40 +0000
Re: On length contraction kenseto <setoken@att.net> - 2015-12-09 06:50 -0800
Re: On length contraction alsor@interia.pl - 2015-12-09 09:06 -0800
Re: On length contraction rotchm <rotchm@gmail.com> - 2015-12-09 09:47 -0800
Re: On length contraction Plexippus Kritikos <plexik@laertesegidio.org> - 2015-12-09 18:11 +0000
Re: On length contraction Sam Wormley <swormley1@gmail.com> - 2015-12-09 12:32 -0600
Re: On length contraction alsor@interia.pl - 2015-12-09 11:18 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-10 06:57 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-10 06:46 -0800
Re: On length contraction wugi <brol@brol.be> - 2015-12-06 18:18 +0100
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-06 12:35 -0600
Re: On length contraction wugi <brol@brol.be> - 2015-12-06 21:58 +0100
Re: On length contraction wugi <brol@brol.be> - 2015-12-06 22:31 +0100
Re: On length contraction Tom Roberts <tjroberts137@sbcglobal.net> - 2015-12-07 10:16 -0600
Re: On length contraction John Gogo <jfgogo22@yahoo.com> - 2015-12-06 13:08 -0800
Re: On length contraction John Gogo <jfgogo22@yahoo.com> - 2015-12-06 14:26 -0800
Re: On length contraction John Gogo <jfgogo22@yahoo.com> - 2015-12-06 14:38 -0800
Re: On length contraction John Gogo <jfgogo22@yahoo.com> - 2015-12-06 15:39 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-06 15:07 -0600
Re: On length contraction benj <none@gmail.com> - 2015-12-14 02:21 -0500
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-14 10:44 -0600
Re: On length contraction alsor@interia.pl - 2015-12-14 08:59 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-14 09:05 -0800
Re: On length contraction alsor@interia.pl - 2015-12-14 09:48 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-14 12:18 -0600
Re: On length contraction kenseto <setoken@att.net> - 2015-12-15 05:49 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-15 08:21 -0600
Re: On length contraction mlwozniak@wp.pl - 2015-12-15 23:29 -0800
Re: On length contraction kenseto <setoken@att.net> - 2015-12-16 07:04 -0800
Re: On length contraction Odd Bodkin <bodkinodd@gmail.com> - 2015-12-16 09:14 -0600
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