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Groups > sci.physics.relativity > #434164
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: Train gedanken - again. |
| Date | 2017-09-27 15:40 +0200 |
| Organization | PointedEars Software (PES) |
| Message-ID | <4805231.Sb9uPGUboI@PointedEars.de> (permalink) |
| References | (4 earlier) <5079786.DvuYhMxLoT@PointedEars.de> <opus8e$72i$1@gioia.aioe.org> <2067019.ElGaqSPkdT@PointedEars.de> <oq1s4j$tef$1@gioia.aioe.org> <753266808.0ifERbkFSE@PointedEars.de> |
Thomas 'PointedEars' Lahn wrote: > HGW wrote: >> On 22/09/17 09:24, Thomas 'PointedEars' Lahn wrote: >>> HGW wrote: >>>> According to SR, the train observer is not moving relative to the >>>> flashes. >>> Wrong. >> Well if you are assuming the flashes strike the ground only then the >> whole aim of the experiment falls apart. > > Of course not. That the flashes strike the ground relative to which one > observer is _not_ moving and the other (in the train) *is*, is the *key* > *fact* of the experiment. It is probably better to be more precise here. “Flashes” are short for “flashes of lightning”; this is the visual phenomenon associated with the electromagnetic phenomenon of _lightning_. So actually not the flashes strike the ground, but the lightnings do. It should also be noted that the ground here is just an explanatory vehicle to provide for a more tangible frame of reference. The experiment works just as well with lightnings in air or with lightnings striking the train (assuming it is long enough, and it and the train observer survive the lightnings striking), or with flashlights or other light sources instead of flashes of lightning. It also works with an automobile or a bus instead of a train aso. That is why it is called a *thought* experiment: the *concepts* matter, not the details of the implementation. PointedEars -- Q: How many theoretical physicists specializing in general relativity does it take to change a light bulb? A: Two: one to hold the bulb and one to rotate the universe. (from: WolframAlpha)
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Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-19 14:56 +0200
Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-19 06:00 -0700
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-19 14:48 +0000
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-19 14:53 +0000
Re: Train gedanken - again. Julio Di Egidio <julio@diegidio.name> - 2017-09-19 08:05 -0700
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-19 09:09 -0700
Re: Train gedanken - again. Julio Di Egidio <julio@diegidio.name> - 2017-09-19 09:35 -0700
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-19 10:45 -0700
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-19 22:01 +0000
Re: Train gedanken - again. Julio Di Egidio <julio@diegidio.name> - 2017-09-20 07:30 -0700
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-20 20:00 +0000
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-19 07:55 -0700
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-19 14:58 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-20 09:18 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-20 04:48 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-20 13:47 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-20 14:33 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 09:05 +1000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-20 16:07 -0700
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-22 01:24 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 12:22 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 15:28 +0200
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 15:40 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-29 09:20 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-29 08:49 +0200
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-29 12:08 +0000
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-29 05:59 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-28 09:22 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 03:08 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-27 20:30 -0700
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-20 20:42 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 08:39 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-21 02:18 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 08:25 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-22 01:37 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 12:34 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-22 13:30 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 06:44 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-10-10 00:24 +0200
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-22 03:02 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 06:50 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-22 22:23 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 10:08 +1000
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-23 04:09 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-23 13:32 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-24 09:02 +1000
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-24 06:31 -0700
Re: Train gedanken - again. "Dono," <sa_ge@comcast.net> - 2017-09-23 19:37 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 07:26 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-24 16:44 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 08:03 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-24 17:35 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 08:26 +1000
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 17:36 -0700
Re: Train gedanken - again. "Dono," <sa_ge@comcast.net> - 2017-09-24 18:24 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 07:34 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 15:49 +1000
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 07:56 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-25 00:00 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 13:47 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-25 00:47 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 23:53 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 19:53 +1000
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-25 02:58 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 13:54 +0200
Re: Train gedanken - again. "HGW, DSc." <HG@....> - 2017-09-26 03:15 +1000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-25 10:19 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 13:56 +0200
Re: Train gedanken - again. "HGW, DSc." <HG@....> - 2017-09-26 03:11 +1000
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-25 14:43 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-26 01:26 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-26 02:06 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-27 08:39 +1000
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 13:52 +0200
Re: Train gedanken - again. "HGW, DSc." <HG@....> - 2017-09-26 03:18 +1000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-25 10:21 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-25 13:19 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 15:48 +1000
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 08:31 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-24 17:46 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-24 09:30 -0700
Re: Train gedanken - again. Paparios <mrios@ing.puc.cl> - 2017-09-24 08:04 -0700
Re: Train gedanken - again. "Dono," <sa_ge@comcast.net> - 2017-09-24 08:24 -0700
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-23 14:11 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-24 08:53 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-24 02:31 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-24 16:39 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-24 12:34 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 08:30 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-24 22:32 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 09:41 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-25 02:51 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 15:51 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-25 12:48 +0000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-20 11:13 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-20 02:31 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-20 02:34 -0700
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-20 03:25 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-19 22:40 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-20 08:08 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 08:46 +1000
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-20 08:33 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-20 00:04 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-20 00:34 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-20 00:42 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-20 10:54 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 08:49 +1000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-20 15:59 -0700
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-22 01:54 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 12:43 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-22 12:56 +0200
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-22 11:04 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 07:36 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 01:38 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-27 20:00 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 12:06 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-28 09:30 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 03:04 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-21 20:36 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-22 07:21 +0200
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-26 21:57 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-26 20:57 -0700
Re: Train gedanken - again. "Dono," <sa_ge@comcast.net> - 2017-09-26 21:00 -0700
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 15:24 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-27 17:39 -0700
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 02:52 +0200
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-20 10:48 +0200
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-20 15:13 +0200
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-20 20:19 +0200
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-20 20:02 +0000
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 09:10 +1000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-21 12:46 +0200
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-20 13:14 -0700
Re: Train gedanken - again. mitchrae3323@gmail.com - 2017-09-20 13:27 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-21 09:29 +1000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-21 14:03 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-21 05:19 -0700
Re: Train gedanken - again. Kos Etrakis <uar@ksskkwi.ck> - 2017-09-21 12:42 +0000
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-21 07:24 -0700
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-21 22:16 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 08:51 +1000
Re: Train gedanken - again. Odd Bodkin <bodkinodd@gmail.com> - 2017-09-22 03:02 +0000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-21 20:18 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-21 20:39 -0700
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-21 20:42 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-22 07:49 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-21 23:51 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-22 09:04 +0200
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-22 09:08 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-22 00:27 -0700
Re: Train gedanken - again. Poutnik <poutnik@privacy.net> - 2017-09-22 11:52 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-22 04:05 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 07:46 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 12:26 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-28 09:31 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 03:01 +0200
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-27 20:22 -0700
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 12:00 +0200
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-22 14:08 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 07:41 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 12:28 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-28 09:32 +1000
Re: Train gedanken - again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-28 03:02 +0200
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-22 07:03 -0700
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-22 19:55 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 07:42 +1000
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-23 06:55 -0700
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-24 11:17 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-22 08:30 +1000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-22 13:52 +0200
Re: Train gedanken - again. mlwozniak@wp.pl - 2017-09-22 05:34 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-23 08:05 +1000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-23 15:38 +0200
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-24 09:12 +1000
Re: Train gedanken - again. "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-23 16:17 -0700
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-24 11:03 +0200
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-24 07:11 -0700
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-24 07:38 -0700
Re: Train gedanken - again. HGW <HW@home.net> - 2017-09-25 08:43 +1000
Re: Train gedanken - again. "Paul B. Andersen" <relativity@paulba.no> - 2017-09-25 14:38 +0200
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-25 07:15 -0700
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-25 07:38 -0700
Re: Train gedanken - again. "HGW, DSc." <HG@....> - 2017-09-26 04:20 +1000
Re: Train gedanken - again. gehan.ameresekere@gmail.com - 2017-09-26 01:23 -0700
Re: Train gedanken - again. kenseto <setoken@att.net> - 2017-09-24 06:48 -0700
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