This video is just really totally wrong..., sorry.

By: Hans de Vries (Hans.no.delete@this.spam.nl), December 15, 2021 6:26 pm
Room: Moderated Discussions
Brett (ggtgp.delete@this.yahoo.com) on December 14, 2021 3:01 pm wrote:
> Electricity is magnetism:
> https://youtu.be/bHIhgxav9LY
>


Simple to measure and prove wrong with very basic equipment....


He claims that the light switches on after just 3.3 ns. The time for an electromagnetic signal to propagate 1 meter. However the induced Electric field at that moment in the light bulb is both very low and very short.

- The current at the switch produces a vector potential field A(x) proportional to the current and pointing in the same direction as the current. This field A(x) reaches the bulb after 3.3ns.

- This induces and Electric field in the bulb wire proportional to E = -dA/dt. If you switch on a DC current then there is only a single pulse. After that E = -dA/dt is zero!


The correct formulation of the propagation of the Electro-Magnetic potential field was given by Liénard & Wiechert around 1898-1900, long after Maxwell's equations from 1860.

See paragraph 2.2 from this chapter of my book.
https://drive.google.com/file/d/1tcyJcs9HEj5KOIJX_gDbTAYVCgIgRzJp/view

To understand the interaction between the electron field and the electromagnetic field via quantum electrodynamics in the simplest form (electrons with a charge but no magnetic moment) you can look at this chapter:
https://drive.google.com/file/d/10BJPudWFg9f-_big8J4R7d7ImtPpqo6B/view

(For electrons including their magnetic moment you need the Dirac equation, 1927)
http://www.physics-quest.org/
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TopicPosted ByDate
Electricity is magnetismBrett2021/12/14 04:01 PM
  *facepalm* (NT)Ray2021/12/14 05:16 PM
    in fairness what started out trollish turned into a really informative thread (NT)anonymous22021/12/15 06:55 PM
  Electricity is magnetismAnon2021/12/14 06:16 PM
    Electricity is magnetismLightning2021/12/14 06:47 PM
      Electricity is magnetismDavid Hess2021/12/14 10:47 PM
    Electricity is magnetismBrett2021/12/15 12:12 PM
      Electricity is magnetismSimon Farnsworth2021/12/15 02:30 PM
      Electricity is magnetismAnon2021/12/15 03:03 PM
      Electricity is magnetism---2021/12/16 12:19 PM
        Electricity is magnetismAdrian2021/12/16 03:51 PM
  Electricity is magnetismAdrian2021/12/15 05:06 AM
    Sorry for a few typos, I was in a hurry, but the typos do not affect the meaningAdrian2021/12/15 05:40 AM
    Electricity is magnetism2021/12/16 06:22 PM
      Electricity is magnetismEtienne Lorrain2021/12/17 02:44 AM
        Electricity is magnetismBrett2021/12/17 01:44 PM
      Electricity is magnetismAdrian2021/12/17 05:24 AM
        Electricity is magnetism2021/12/17 02:49 PM
          Electricity is magnetismAdrian2021/12/18 03:54 AM
            Electricity is magnetismAdrian2021/12/18 04:17 AM
              Electricity is magnetismanon12021/12/19 03:51 AM
                Electricity is magnetismAdrian2021/12/19 05:13 AM
                Electricity is magnetismDavid Hess2021/12/19 06:54 PM
  Electricity is magnetismzArchJon2021/12/15 11:53 AM
  This video is just really totally wrong..., sorry.Hans de Vries2021/12/15 06:26 PM
    This video is just really totally wrong..., sorry.anon2021/12/16 05:03 AM
  Electricity is magnetismBrett2021/12/19 06:02 PM
    Electricity is magnetismDavid Hess2021/12/19 07:11 PM
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