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Re: Proof That Light Speed is Not c in Empty Space

From ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups sci.physics.relativity
Subject Re: Proof That Light Speed is Not c in Empty Space
Date 2026-09-29 10:56 +0000
Organization Stefan Ram
Message-ID <light-20260929115124@ram.dialup.fu-berlin.de> (permalink)
References <18d3159718a90320$6566$1943410$4296dcc3@news.newsgroupdirect.com> <7seqk8eLHrnf-gdqOY440AmCgW8@jntp> <18d316df59e0e9e3$6568$1943410$4296dcc3@news.newsgroupdirect.com> <117r7tr$1041f$1@dont-email.me>

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Mikko <mikko.levanto@iki.fi> wrote or quoted:
>Maxwell did not say one way or other whether the speed of light is
>c relative to its source. From what he did say we can infer that he
>thought that that depeds on the motion of the source. Maxwell thought
>that the speed of light is c in some frame that was later called ether.

  In a reference frame, Maxwell's equations yield the wave equation

Nabla^2 E = mu_0 eps_0 d^2/dt^2 E,

  and the solutions have speed 1/sqrt(mu_0 eps_0), which is c. There
  is no source term, i.e., no dependency on the speed of a source.

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Thread

Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-07 16:06 +0000
  Re: Proof That Light Speed is Not c in Empty Space Python <python@cccp.invalid> - 2026-09-07 16:12 +0000
    Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-07 16:30 +0000
      Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-09 12:12 +0300
        Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-09 23:35 +0000
          Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-10 11:18 +0300
            Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-10 17:52 +0000
              Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-10 12:09 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-11 00:11 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-10 19:20 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-11 21:02 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-11 16:11 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-12 00:44 +0000
              Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-11 11:26 +0300
                Re: Proof That Light Speed is Not c in Empty Space Maciej Woźniak <mlwozniak@wp.pl> - 2026-09-11 11:02 +0200
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-11 07:37 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-11 21:05 +0000
                Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-12 13:05 +0300
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-12 07:41 -0700
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-12 07:48 -0700
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-12 08:25 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-13 23:12 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-13 18:16 -0700
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-13 18:35 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 16:01 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 09:21 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 17:14 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 10:24 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-15 00:03 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 17:22 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-15 05:21 +0000
                Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-14 11:43 +0200
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 15:48 +0000
                Re: Proof That Light Speed is Not c in Empty Space (Zeno, Vitali, Hausdorff, von Neumann) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 08:52 -0700
                Re: Proof That Light Speed is Not c in Empty Space (Zeno, Vitali, Hausdorff, von Neumann) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 09:25 -0700
                Re: Proof That Light Speed is Not c in Empty Space (Zeno, Vitali, Hausdorff, von Neumann) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 10:45 -0700
                Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-12 12:59 +0200
                Re: Proof That Light Speed is Not c in Empty Space Maciej Woźniak <mlwozniak@wp.pl> - 2026-09-12 13:04 +0200
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-13 23:28 +0000
                Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-14 11:41 +0300
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 16:05 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 09:24 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 17:18 +0000
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 10:29 -0700
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-14 10:53 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 23:49 +0000
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 23:48 +0000
                Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-15 12:07 +0300
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-15 23:25 +0000
                Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-16 10:48 +0300
                Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-14 11:43 +0200
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-14 16:14 +0000
                Re: Proof That Light Speed is Not c in Empty Space Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-09-13 10:18 +0200
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-13 07:30 -0700
                Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-13 09:45 -0700
            Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-11 22:10 +0200
              Re: Proof That Light Speed is Not c in Empty Space Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-09-11 16:13 -0700
                Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-12 00:46 +0000
        Re: Proof That Light Speed is Not c in Empty Space ram@zedat.fu-berlin.de (Stefan Ram) - 2026-09-29 10:56 +0000
          Re: Proof That Light Speed is Not c in Empty Space The Starmaker <starmaker@ix.netcom.com> - 2026-09-29 15:12 -0700
            Re: Proof That Light Speed is Not c in Empty Space The Starmaker <starmaker@ix.netcom.com> - 2026-10-02 20:46 -0700
          Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-30 09:43 +0000
  Speed of light (was: Proof That Light Speed is Not c in Empty Space) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-09-09 04:03 +0200
  Re: Proof That Light Speed is Not c in Empty Space Mikko <mikko.levanto@iki.fi> - 2026-09-09 12:06 +0300
    Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-09 23:39 +0000
      Re: Proof That Light Speed is Not c in Empty Space The Starmaker <starmaker@ix.netcom.com> - 2026-09-09 16:44 -0700
        Re: Proof That Light Speed is Not c in Empty Space The Starmaker <starmaker@ix.netcom.com> - 2026-09-09 17:12 -0700
          Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-10 18:19 +0000
            Re: Proof That Light Speed is Not c in Empty Space The Starmaker <starmaker@ix.netcom.com> - 2026-09-11 08:45 -0700
  Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-09 11:31 +0200
    Re: Proof That Light Speed is Not c in Empty Space HenryWilson <Hgw@home.com> - 2026-09-09 23:43 +0000
      Re: Proof That Light Speed is Not c in Empty Space nospam@de-ster.demon.nl (J. J. Lodder) - 2026-09-10 23:58 +0200

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