EVGRAY Archive

Re: [EVGRAY] Speed of Propagation of a Magnetic Field. - xkcd

Database ID: 109234
2018-08-23T08:46:41-05:00
Norman Wootan <[email protected]>

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Hey!  Bert, Remember the Bill Beaty "Cease of motion wave"???



      Re: Speed of Propagation of a Magnetic Field.
      <http://forums.xkcd.com/viewtopic.php?t=62899#p3337605>

Post 
<http://forums.xkcd.com/viewtopic.php?p=3337605&sid=132db8a49dfdcf0cd5585ce025f461e8#p3337605>by 
*gmalivuk 
<http://forums.xkcd.com/memberlist.php?mode=viewprofile&u=5887&sid=132db8a49dfdcf0cd5585ce025f461e8>* 
» Thu Apr 25, 2013 5:25 am UTC

    voltardark <http://forums.xkcd.com/viewtopic.php?p=3337601#p3337601>
    wrote:Magnetism propagate at the speed of light but when when it
    cease to exist it's nearly instantaneous...

No, *all* changes in the magnetic field propagate at the speed of light, 
including the cessation of the magnetic field.
Unless stated otherwise, I do not care whether a statement, by itself, 
constitutes a persuasive political argument. I care whether it's true.
---
If this post has math that doesn't work for you, use TeX the World for 
Firefox <http://thewe.net/tex/> or Chrome 
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(he/him/his)
Top <http://forums.xkcd.com/viewtopic.php?t=62899#top>

On 8/22/2018 4:41 PM, Norman Wootan [email protected] [EVGRAY] wrote:
> http://forums.xkcd.com/viewtopic.php?t=62899
>
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To [email protected], Bert Pool <[email protected]>
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Subject Re: [EVGRAY] Speed of Propagation of a Magnetic Field. - xkcd
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