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Groups > sci.physics.relativity > #472415

Re: Variable Time and the Variable Speed of Light

From Thomas Heger <ttt_heg@web.de>
Newsgroups sci.physics.relativity
Subject Re: Variable Time and the Variable Speed of Light
Date 2018-09-19 16:06 +0200
Message-ID <g0f3fnF46dbU1@mid.individual.net> (permalink)
References <6fceaded-718d-4c9b-ba23-577dd41380ec@googlegroups.com> <ftj5goFr4b3U1@mid.individual.net> <11aa1aa0-5272-8d7b-e1db-45d63a8b1ae8@PointedEars.de>

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Am 06.09.2018 um 01:07 schrieb Thomas 'PointedEars' Lahn:
> Thomas Heger wrote:
>> Sure, there is circular reasoning in the definition of space and time.
> 
> No, there is not.  You simply have no clue.
> 
>> But how fast is actually light, if you have no meter defined?
> 
> It travels a multiple of whatever unit of length you choose in a multiple of
> whatever unit of time you choose.

You certainly know, that the meter is defined by the distance, that 
light travels through the vacuum  in a certain (very small) amount of time.

So the meter is defined by means of light and a certain interval of time.

This fraction of the second is defined by the time that light needs to 
travel a meter through vacuum.


To me this looks VERY much like circular reasoning.

..

TH

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Thread

Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-06 01:07 +0200
  Re: Variable Time and the Variable Speed of Light Thomas Heger <ttt_heg@web.de> - 2018-09-19 16:06 +0200
    Re: Variable Time and the Variable Speed of Light Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-19 10:43 -0500
      Re: Variable Time and the Variable Speed of Light Stakos Netakis <autp@wsalaw.oa> - 2018-09-19 15:56 +0000
      Re: Variable Time and the Variable Speed of Light Thomas Heger <ttt_heg@web.de> - 2018-09-20 06:45 +0200
        Re: Variable Time and the Variable Speed of Light Stakos Netakis <autp@wsalaws.np> - 2018-09-20 16:35 +0000
          Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-21 19:45 +0200
            Re: Variable Time and the Variable Speed of Light Rhett Joyner <udof@rsrrfirw.on> - 2018-09-21 21:41 +0000
              Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-22 00:14 +0200
                Re: Variable Time and the Variable Speed of Light Rhett Joyner <udof@rsrrfirv.on> - 2018-09-21 22:48 +0000
        Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-21 19:43 +0200
          Re: Variable Time and the Variable Speed of Light Thomas Heger <ttt_heg@web.de> - 2018-09-23 16:23 +0200
            Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-23 16:44 +0200
      Re: Variable Time and the Variable Speed of Light alsor@interia.pl - 2018-09-20 11:07 -0700
        Re: Variable Time and the Variable Speed of Light JanPB <filmart@gmail.com> - 2018-09-20 12:16 -0700
          Re: Variable Time and the Variable Speed of Light Jayson Durante <tug@wsedwsa.np> - 2018-09-20 19:43 +0000
          Re: Variable Time and the Variable Speed of Light alsor@interia.pl - 2018-09-20 15:38 -0700
        Re: Variable Time and the Variable Speed of Light Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-20 23:34 -0500
          Re: Variable Time and the Variable Speed of Light Stakos Netakis <autp@wsalaws.np> - 2018-09-21 09:23 +0000
          Re: Variable Time and the Variable Speed of Light alsor@interia.pl - 2018-09-21 11:25 -0700
            Re: Variable Time and the Variable Speed of Light JanPB <filmart@gmail.com> - 2018-09-21 16:17 -0700
              Re: Variable Time and the Variable Speed of Light alsor@interia.pl - 2018-09-22 10:36 -0700
                Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-22 20:23 +0200
    Re: Variable Time and the Variable Speed of Light Stakos Netakis <autp@wsalaw.oa> - 2018-09-19 15:48 +0000
    Re: Variable Time and the Variable Speed of Light "Dono," <sa_ge@comcast.net> - 2018-09-19 09:19 -0700
      Re: Variable Time and the Variable Speed of Light Stakos Netakis <autp@wsalaws.np> - 2018-09-21 09:58 +0000
    Re: Variable Time and the Variable Speed of Light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-09-19 23:43 +0200

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