Electricity is magnetism

By: (0xe2.0x9a.0x9b.delete@this.gmail.com), December 16, 2021 6:22 pm
Room: Moderated Discussions
Adrian (a.delete@this.acm.org) on December 15, 2021 4:06 am wrote:
> Brett (ggtgp.delete@this.yahoo.com) on December 14, 2021 3:01 pm wrote:
> > Electricity is magnetism:
> > https://youtu.be/bHIhgxav9LY
>
> So the video just plays with words and it presents normal circuit behavior as unexpected.
>
> The only right part of it is stressing that if you have a circuit with parts close to the power
> supply and parts very distant to it, the electromagnetic field will propagate instantaneously to
> all the near parts, so conduction in them can start immediately, while the distant parts, regardless
> where they are placed in the circuit, will behave as long lines so at their insertion point in the
> circuit they might have an inductive, capacitive or resonant behavior. Depending on the details
> of the circuit, the bulb may light immediately as in the video, or not, in other cases.

Assuming the circuit is built as imagined in the video (that is: the shortest distance between the light bulb and the power supply is 1 meter; c = 300e6 m/s; 1/c = 3.3e-09; the total length of the cables in the circuit is [left+right = c+c = 2*c = 600e6 meters]): What is the minimum voltage of the power supply in order for the light bulb to reliably emit 1 photon in 1/c seconds after closing the switch?

-atom
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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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