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Groups > sci.physics.relativity > #382157
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: Particle Physics |
| Date | 2016-04-23 20:36 +0200 |
| Message-ID | <do1tlnFicamU1@mid.individual.net> (permalink) |
| References | (3 earlier) <nfd4jo$lmq$1@gioia.aioe.org> <dnv6gjFrsupU1@mid.individual.net> <a8idnSKNzdWW8ofKnZ2dnUU7_83NnZ2d@giganews.com> <dnvftkFua8vU1@mid.individual.net> <nfftj1$pka$3@gioia.aioe.org> |
Am 23.04.2016 15:33, schrieb Odd Bodkin: >> If we take the meter as unit for measurements of the type length, then a >> certain length is a product of a number and the standard unit '1 m'. >> >> It can be a small number or a large number. So we could measure tiny >> distances and extremely large ones with the same unit. >> >> For convenience we could measure atoms in very small units and stars >> with light-years. But that's is not necessary. Meters are possible for >> all possible distances. >> >> To leave out the meter in a measurement would make things difficult, >> since nobody could interpret a certain number (say 453), if we do not >> declare, which kind of units we would like to count with it. > > Fine, so keep the meter. Use it for time, too. One meter of time is a > little over 3 ns. Now you have ONE unit that you can use to measure both > time and space. There's absolutely no reason to retain two. > Only: 'time' and 'space' do not denote the same subject. If GR is correct and space and time are in fact linked together, then, nevertheless, you must not use the same unit for different entities. 'Space' is somehow associated with 'distance'. 'Time' is more connected with 'events' and about their order. If we order events in space in depth of space, then a beam of light passes by events in space. Those events are perceived as simultaneous, even if they aren't. If we use the term 'time' for the imaginary 'movement' between events at the same location and use the term 'distance' for real movement in real space, we have a consistent use of these terms. But they do not denote the same entity, since 'imaginary movement' and 'real movement' are not identical. So I wonder, why you would like to use the same unit for things, that would deserve their own units. TH
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Particle Physics Carl Susumu <numbernumber1212@gmail.com> - 2016-04-21 17:09 -0700
Re: Particle Physics Gary Harnagel <hitlong@yahoo.com> - 2016-04-21 19:42 -0700
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-22 06:42 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-22 07:14 -0500
Re: Particle Physics David Fuller <fuller.david@hotmail.com> - 2016-04-22 07:01 -0700
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-22 19:49 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-22 13:06 -0500
Re: Particle Physics Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-04-23 01:37 +0200
Re: Particle Physics Tom Roberts <tjroberts137@sbcglobal.net> - 2016-04-22 13:35 -0500
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-22 22:29 +0200
Re: Particle Physics Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-04-22 23:32 +0200
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-23 06:15 +0200
Re: Particle Physics JanPB <filmart@gmail.com> - 2016-04-22 22:25 -0700
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-23 23:18 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-24 13:55 -0500
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-23 08:33 -0500
Re: Particle Physics Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-04-23 15:53 +0200
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-23 20:36 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-24 13:59 -0500
Re: Particle Physics Tom Roberts <tjroberts137@sbcglobal.net> - 2016-04-23 16:43 -0500
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-24 07:16 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-24 14:02 -0500
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-25 06:55 +0200
Re: Particle Physics Odd Bodkin <bodkinodd@gmail.com> - 2016-04-25 06:07 -0500
Re: Particle Physics Thomas Heger <ttt_heg@web.de> - 2016-04-26 22:24 +0200
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