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Re: Explaining Time Dilation

From Sylvia Else <sylvia@not.at.this.address>
Newsgroups sci.physics.relativity
Subject Re: Explaining Time Dilation
Date 2017-02-20 21:11 +1100
Message-ID <egvtn8Fmt6mU1@mid.individual.net> (permalink)
References <7467c518-4ec6-4132-b340-a8461e9e0773@googlegroups.com>

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On 15/02/2017 3:02 AM, Ed Lake wrote:

> Believe it or not, this is TOTALLY consistent with Einstein's
> Theories of Relativity.  "The same laws of electrodynamics and optics
> will be valid for all frames of reference for which the equations of
> mechanics hold good."  The equations are the same, the variables are
> different - specifically the length of a second.

For each observer such observer (an inertial observer) the laws must be 
the same. In particular, in one second, as determined by the way in 
which physical processes evolve, light must travel 299792458 metres, no 
more, no less. If it didn't then the laws of electrodynamics and optics 
would not be valid.

It is exactly this requirement, in the context of observers freely 
falling in a gravitational field, that leads to the prediction (much 
verified) of gravitational time dilation.

Sylvia.

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Thread

Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-14 08:02 -0800
  Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-14 08:25 -0800
    Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-14 08:50 -0800
      Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-14 09:33 -0800
        Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-14 10:00 -0800
          Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-14 11:16 -0800
            Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-14 12:42 -0800
              Re: Explaining Time Dilation Odd Bodkin <bodkinodd@gmail.com> - 2017-02-14 14:45 -0600
                Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-15 08:07 -0800
                Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-15 08:17 -0800
                Re: Explaining Time Dilation Odd Bodkin <bodkinodd@gmail.com> - 2017-02-15 14:57 -0600
                Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-16 06:54 -0800
                Re: Explaining Time Dilation Poutnik <poutnik4nntp@gmail.com> - 2017-02-16 16:18 +0100
                Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-16 08:09 -0800
                Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-16 08:14 -0800
                Re: Explaining Time Dilation Poutnik <poutnik4nntp@gmail.com> - 2017-02-16 17:54 +0100
                Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-16 13:53 -0800
                Re: Explaining Time Dilation Bret Noss <osotr@rwtropsws.org> - 2017-02-21 16:58 +0000
                Re: Explaining Time Dilation paparios <paparios@gmail.com> - 2017-02-16 07:32 -0800
        Re: Explaining Time Dilation Robert Winn <rbwinn3@gmail.com> - 2017-02-15 10:46 -0800
          Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-15 12:46 -0800
  Re: Explaining Time Dilation Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2017-02-14 18:27 +0100
    Re: Explaining Time Dilation Robert Winn <rbwinn3@gmail.com> - 2017-02-15 08:23 -0800
    Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-15 09:15 -0800
      Re: Explaining Time Dilation Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2017-02-15 18:20 +0100
  Re: Explaining Time Dilation kenseto <setoken@att.net> - 2017-02-16 08:53 -0800
    Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-16 13:48 -0800
      Re: Explaining Time Dilation kenseto <setoken@att.net> - 2017-02-17 06:24 -0800
        Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-17 07:19 -0800
          Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-17 07:45 -0800
      Re: Explaining Time Dilation kenseto <setoken@att.net> - 2017-02-17 20:31 -0800
        Re: Explaining Time Dilation Ed Lake <detect@newsguy.com> - 2017-02-18 08:08 -0800
          Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-20 01:59 -0800
            Re: Explaining Time Dilation Tom Roberts <tjroberts137@sbcglobal.net> - 2017-02-21 08:55 -0600
              Re: Explaining Time Dilation mlwozniak@wp.pl - 2017-02-21 07:00 -0800
              Re: Explaining Time Dilation kenseto <setoken@att.net> - 2017-02-22 06:22 -0800
              Re: Explaining Time Dilation kenseto <setoken@att.net> - 2017-02-22 06:32 -0800
          Re: Explaining Time Dilation alsor@interia.pl - 2017-02-20 10:42 -0800
            Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-21 00:59 -0800
              Re: Explaining Time Dilation Tom Roberts <tjroberts137@sbcglobal.net> - 2017-02-21 09:08 -0600
                Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-21 08:39 -0800
                Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-24 07:16 -0800
              Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-21 10:06 -0800
                Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-21 12:28 -0800
                Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-22 04:24 -0800
                Re: Explaining Time Dilation "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-02-22 05:40 -0800
              Re: Explaining Time Dilation alsor@interia.pl - 2017-02-21 12:26 -0800
  Re: Explaining Time Dilation Sylvia Else <sylvia@not.at.this.address> - 2017-02-20 21:11 +1100
    Re: Explaining Time Dilation mlwozniak@wp.pl - 2017-02-20 02:59 -0800
    Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-20 09:57 -0800
      Re: Explaining Time Dilation Eckard B <eckard.blumschein@arcor.de> - 2017-02-21 00:52 -0800
        Re: Explaining Time Dilation Sylvia Else <sylvia@not.at.this.address> - 2017-02-21 20:29 +1100
        Re: Explaining Time Dilation "Paul B. Andersen" <relativity@paulba.no> - 2017-02-21 15:27 +0100

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