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Re: Twin paradox article in Wikipedia

Newsgroups sci.physics.relativity
Date 2023-07-15 13:37 -0700
References (3 earlier) <050edd70-7530-4d53-a137-9dab0353a87fn@googlegroups.com> <add03251-7093-48f4-96ed-9c8e474375d9n@googlegroups.com> <1qdtafd.9vy09c1jy0dtpN%nospam@de-ster.demon.nl> <396eddf1-5257-4384-8162-a895fd0f0aa8n@googlegroups.com> <1qdxhyu.1ok3o463kbpy5N%nospam@de-ster.demon.nl>
Message-ID <46bcdec3-ce4f-4d2d-9122-910cceb2ba31n@googlegroups.com> (permalink)
Subject Re: Twin paradox article in Wikipedia
From Paul Alsing <pnalsing@gmail.com>

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On Saturday, July 15, 2023 at 12:37:42 PM UTC-7, J. J. Lodder wrote:
> Prokaryotic Capase Homolog <prokaryotic.c...@gmail.com> 
> wrote:
> > On Thursday, July 13, 2023 at 11:21:16?AM UTC-5, J. J. Lodder wrote: 
> > > Prokaryotic Capase Homolog <prokaryotic.c...@gmail.com> 
> > > wrote: 
> > 
> > > > Ives-Stillwell was ***NOT*** concerned with distinguishing 
> > > > between emission models of light versus other models. 
> > > > Naïve emission models had *ALREADY* been disproven up, 
> > > > down and sideways by experiments such as those by 
> > > > Michelson (1913), Majorana (1918/19), Tomaschek (1924), 
> > > > Miller (1925-6), by astronomical observation (de Sitter, 1913) 
> > > > and so on and so forth. 
> > > > 
> > > > Ives-Stillwell was concerned with answering the question, 
> > > > "does transverse Doppler effect exist"? Your complaints 
> > > > about what emission theory supposedly predicts are totally 
> > > > irrelevant. The mere fact that their spectrograph worked 
> > > > at all disproves your assumption of constant wavelength, 
> > > > unless you want to invent some new fantasy theory of how 
> > > > diffraction gratings work (which measure wavelength, not 
> > > > frequency). 

> > > And how do you think that the spacing of the grating is calibrated? 
> > 
> > I'm not sure where you are going with this question?

> Pointing out that you are going nowhere with your claim 
> that gratings measure wavelength, not frequency, 
> 
> Jan

Am I missing something here?

https://www.thomasnet.com/articles/other/types-of-diffraction-gratings-and-what-they-are-used-for/#:~:text=It%20is%20a%20measure%20of,across%20the%20orders%20of%20diffraction.

"Diffraction gratings are optical devices that are used in instruments such as spectrometers to separate polychromatic light into the underlying constituent wavelengths of which it is comprised. This process disperses the light in such a way that each wavelength is directed to a different angle as a result of the interference pattern that results from the incident light’s reflection off of or transmission through the grating structure."

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Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-10 10:26 -0700
  Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-10 10:33 -0700
  Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-10 17:56 +0000
    Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-10 11:26 -0700
      Re: Twin paradox article in Wikipedia "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2023-07-10 14:27 -0700
        Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-10 21:42 +0000
          Re: Twin paradox article in Wikipedia Gernaro Close <lcgr@rrlgrane.ne> - 2023-07-10 21:58 +0000
            Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-10 22:12 +0000
            Re: Twin paradox article in Wikipedia Emanuele Pezos <leop@mmpussos.zm> - 2023-07-12 08:34 +0000
          Re: Twin paradox article in Wikipedia Volney <volney@invalid.invalid> - 2023-07-11 11:03 -0400
            Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-11 08:11 -0700
            Re: Twin paradox article in Wikipedia Wade Spyridis <didi@drdsippw.ss> - 2023-07-11 20:01 +0000
  Re: Twin paradox article in Wikipedia patdolan <patdolan@comcast.net> - 2023-07-10 15:14 -0700
    Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-10 22:28 +0000
      Re: Twin paradox article in Wikipedia Harry Angelopoulos <ouse@assapoyr.ug> - 2023-07-10 22:34 +0000
      Re: Twin paradox article in Wikipedia patdolan <patdolan@comcast.net> - 2023-07-10 15:50 -0700
      Re: Twin paradox article in Wikipedia Athel Cornish-Bowden <athel.cb@gmail.com> - 2023-07-11 11:37 +0200
    Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-10 19:46 -0700
      Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-10 20:47 -0700
  Re: Twin paradox article in Wikipedia The Starmaker <starmaker@ix.netcom.com> - 2023-07-10 21:50 -0700
    Re: Twin paradox article in Wikipedia The Starmaker <starmaker@ix.netcom.com> - 2023-07-11 11:07 -0700
      Re: Twin paradox article in Wikipedia The Starmaker <starmaker@ix.netcom.com> - 2023-07-11 21:19 -0700
  Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-11 08:00 -0700
    Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-11 08:29 -0700
      Re: Twin paradox article in Wikipedia Maïkel Jacques-Sonne <mjs@frite.fr> - 2023-07-11 16:03 +0000
      Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-11 10:03 -0700
  Re: Twin paradox article in Wikipedia wugi <wugi@brol.invalid> - 2023-07-11 18:53 +0200
    Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-11 10:18 -0700
      Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-11 17:38 +0000
      Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-11 10:39 -0700
        Re: Twin paradox article in Wikipedia Volney <volney@invalid.invalid> - 2023-07-12 23:34 -0400
          Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-12 22:29 -0700
            Re: Twin paradox article in Wikipedia Volney <volney@invalid.invalid> - 2023-07-13 09:11 -0400
              Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-13 06:27 -0700
      Re: Twin paradox article in Wikipedia wugi <wugi@brol.invalid> - 2023-07-12 17:32 +0200
        Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-12 09:05 -0700
          Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-12 09:46 -0700
          Re: Twin paradox article in Wikipedia wugi <wugi@brol.invalid> - 2023-07-12 19:07 +0200
            Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-12 17:36 +0000
              Re: Twin paradox article in Wikipedia wugi <wugi@brol.invalid> - 2023-07-12 21:16 +0200
                Re: Twin paradox article in Wikipedia wugi <wugi@brol.invalid> - 2023-07-12 21:19 +0200
                Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-12 19:47 +0000
  Re: Twin paradox article in Wikipedia larry harson <larryharson66@gmail.com> - 2023-07-11 11:30 -0700
    Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-11 12:02 -0700
  Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-12 07:19 -0700
    Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-12 08:32 -0700
      Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-12 13:24 -0700
        Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-12 20:43 -0700
          Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 01:31 -0700
            Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 07:14 -0700
              Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 08:31 -0700
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 09:13 -0700
                Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 12:16 -0700
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 20:49 -0700
                Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 21:03 -0700
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 21:33 -0700
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-14 01:09 -0700
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-24 17:08 -0700
              Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 09:49 -0700
        Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 04:30 -0700
          Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-13 18:21 +0200
            Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 09:46 -0700
              Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-15 21:37 +0200
                Re: Twin paradox article in Wikipedia Paul Alsing <pnalsing@gmail.com> - 2023-07-15 13:37 -0700
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-15 13:52 -0700
                Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-16 12:03 +0200
                Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-16 03:54 -0700
                Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-16 13:36 +0200
                Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-16 09:03 -0500
                Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-16 07:18 -0700
                Re: Twin paradox article in Wikipedia Elizardo Sklavenitis <otrv@vzoeaioo.tk> - 2023-07-16 19:08 +0000
                Re: Twin paradox article in Wikipedia Meredith Adamou <utto@mddaeaem.tt> - 2023-07-16 18:55 +0000
                Re: Twin paradox article in Wikipedia RichD <r_delaney2001@yahoo.com> - 2023-07-17 11:49 -0700
                Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-17 22:07 +0200
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-18 00:41 -0700
                Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-18 22:49 -0500
                Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-18 21:06 -0700
                Re: Twin paradox article in Wikipedia Honorio Christakos <iosi@asrsosch.rc> - 2023-07-19 08:46 +0000
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-19 10:58 -0700
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-16 06:09 -0700
                Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-16 04:35 -0700
                Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-15 23:29 +0200
                Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-15 18:37 -0500
                Re: Twin paradox article in Wikipedia nospam@de-ster.demon.nl (J. J. Lodder) - 2023-07-16 12:03 +0200
                Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-18 23:28 -0500
                Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-18 22:06 -0700
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-18 00:31 -0700
          Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 10:21 -0700
            Re: Twin paradox article in Wikipedia Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2023-07-13 11:01 -0700
              Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 13:49 -0700
              Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 14:06 -0700
            Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 12:18 -0700
              Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-13 13:51 -0700
                Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-13 14:52 -0700
                Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-14 00:49 -0700
                Re: Twin paradox article in Wikipedia "Dono." <eggy20011951@gmail.com> - 2023-07-14 08:24 -0700
          Re: Twin paradox article in Wikipedia Lou <noelturntive@live.co.uk> - 2023-07-17 10:59 -0700
  Re: Twin paradox article in Wikipedia Mike Fontenot <mlfasf@comcast.net> - 2023-07-14 10:32 -0600
    Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-14 09:45 -0700
    Re: Twin paradox article in Wikipedia The Starmaker <starmaker@ix.netcom.com> - 2023-07-14 09:48 -0700
      Re: Twin paradox article in Wikipedia The Starmaker <starmaker@ix.netcom.com> - 2023-07-14 22:19 -0700
    Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-15 13:07 -0500
      Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-15 11:15 -0700
      Re: Twin paradox article in Wikipedia Mike Fontenot <mlfasf@comcast.net> - 2023-07-16 11:45 -0600
        Re: Twin paradox article in Wikipedia whodat <whodaat@void.nowgre.com> - 2023-07-16 13:36 -0500
        Re: Twin paradox article in Wikipedia Tom Roberts <tjoberts137@sbcglobal.net> - 2023-07-16 22:19 -0500
          Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-16 21:26 -0700
    Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-15 19:09 +0000
      Re: Twin paradox article in Wikipedia "Paul B. Andersen" <paul.b.andersen@paulba.no> - 2023-07-16 13:23 +0200
        Re: Twin paradox article in Wikipedia Maciej Wozniak <maluwozniak@gmail.com> - 2023-07-16 04:36 -0700
        Re: Twin paradox article in Wikipedia Richard Hachel <r.hachel@frite.fr> - 2023-07-16 13:08 +0000
          Re: Twin paradox article in Wikipedia Dallas Anetakis <aske@aaeeatli.as> - 2023-07-16 13:41 +0000
          Re: Twin paradox article in Wikipedia Athel Cornish-Bowden <athel.cb@gmail.com> - 2023-07-16 15:45 +0200

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