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Re: Does the Principle of Relativity travel at the speed of light?

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On 12/8/23 8:54 AM, Tom Roberts wrote:
>
> Let's ignore the nonsense of the 'BBP', and just consider a distant
> observer starting at rest relative to the solar system, and accelerating
> toward it. They are continuously observing the solar system via light
> emitted by it. As they increase velocity, the Doppler shift increases
> correspondingly, and they observe that LIGHT FROM THE SOLAR SYSTEM shows
> the planets speeding up (and getting more blueshifted). Of course this
> observer does not affect the solar system in any way: the planets
> themselves do not change speed, it is only LIGHT from them that APPEARS
> to speed up, to this accelerating observer.
> 

The really interesting and important question is NOT about what the 
images transmitted from the distant person tell the receiving object. 
That information is old and extremely out-of-date, and really not of 
much importance.

What the observing person REALLY wants to know is "what is the age of 
that distant person "right now"?  I.e., the most important and 
interesting thing in special relativity is "NOW at a distance".

And "NOW at a distance" is important for accelerating observers as well 
as for inertial observers ... it is important to understand how to 
determine it for BOTH types of observers.

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Does the Principle of Relativity travel at the speed of light? patdolan <patdolan@comcast.net> - 2023-11-09 10:21 -0800
  Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjroberts137@sbcglobal.net> - 2023-12-08 09:54 -0600
    Re: Does the Principle of Relativity travel at the speed of light? patdolan <patdolan@comcast.net> - 2023-12-08 11:50 -0800
      Re: Does the Principle of Relativity travel at the speed of light? "Paul B. Andersen" <relativity@paulba.no> - 2023-12-09 11:14 +0100
      Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-09 13:47 -0600
    Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-09 14:14 -0700
      Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-10 09:48 -0700
        Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-10 11:39 -0700
          Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-10 15:00 -0700
            Re: Does the Principle of Relativity travel at the speed of light? Cresencio Nurmuhametov Pasternak <arth@mecucnec.rn> - 2023-12-10 23:29 +0000
              Re: Does the Principle of Relativity travel at the speed of light? Physfitfreak <physfitfreak@gmail.com> - 2023-12-10 18:53 -0600
            Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-11 10:32 -0700
      Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-11 11:49 -0600
        Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-11 14:55 -0700
          Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-13 19:19 -0600
            Re: Does the Principle of Relativity travel at the speed of light? Maciej Wozniak <maluwozniak@gmail.com> - 2023-12-13 17:28 -0800
              Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-13 18:39 -0800
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-15 13:06 -0800
            Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-14 12:47 -0700
              Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-14 13:55 -0600
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-14 13:32 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-14 18:31 -0800
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-14 15:27 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-17 16:18 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-17 19:25 -0800
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-18 09:29 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjroberts137@sbcglobal.net> - 2023-12-18 12:16 -0600
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-18 13:28 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-18 21:04 -0600
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-18 20:36 -0800
                Re: Does the Principle of Relativity travel at the speed of light? Mike Fontenot <mlfasf@comcast.net> - 2023-12-19 09:09 -0700
                Re: Does the Principle of Relativity travel at the speed of light? Mikko <mikko.levanto@iki.fi> - 2023-12-23 12:21 +0200
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-23 11:28 -0800
            Re: Does the Principle of Relativity travel at the speed of light? hitlong@yahoo.com (gharnagel) - 2023-12-21 22:34 +0000
    Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-10 16:05 -0800
      Re: Does the Principle of Relativity travel at the speed of light? patdolan <patdolan@comcast.net> - 2023-12-10 16:32 -0800
        Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-10 17:43 -0800
          Re: Does the Principle of Relativity travel at the speed of light? patdolan <patdolan@comcast.net> - 2023-12-10 18:41 -0800
            Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-10 18:51 -0800
              Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-11 16:17 -0800
        Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-11 11:55 -0600
          Re: Does the Principle of Relativity travel at the speed of light? "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2023-12-11 10:39 -0800
            Re: Does the Principle of Relativity travel at the speed of light? Tom Roberts <tjoberts137@sbcglobal.net> - 2023-12-11 20:40 -0600
              Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-11 19:07 -0800
                Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-11 20:03 -0800
              Re: Does the Principle of Relativity travel at the speed of light? Maciej Wozniak <maluwozniak@gmail.com> - 2023-12-11 19:08 -0800
  Re: Does the Principle of Relativity travel at the speed of light? Laurence Clark Crossen <l.c.crossen@hotmail.com> - 2023-12-09 10:59 -0800
  Re: Does the Principle of Relativity travel at the speed of light? Beda Pietanza <bedapietanza43@gmail.com> - 2023-12-19 08:28 -0800
    Re: Does the Principle of Relativity travel at the speed of light? Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-12-22 16:39 -0800

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