Re: [Phys-l] induced electric field

[Jack Uretsky <jlu@hep.anl.gov>]

Radio waves from a betatron?  Tell me more, please.


"Trust me.  I have a lot of experience at this."
		General Custer's unremembered message to his men,
		just before leading them into the Little Big Horn Valley




On Tue, 24 Nov 2009, Brian Whatcott wrote:

> Let me throw in another snippet that has not been mentioned in the
> current melee:
>
> A (slowly) increasing magnetic field gives rise to an electromagnetic
> field, in the nature of things, that radiates at the speed of light  -
> we call them radio waves.
>
> Brian W
>
> Jack Uretsky wrote:
> > Hi all-
> >  	I don't know enough about the old aether analogy, but mebbe that
> > makes thing easier to think about.  The point is that curl -> vorticity,
> > and in the fluid analogy, vorticity keeps the medium from increasing its
> > velocity uniformly.  This has to work out, because Maxwell's equations
> > were consistent with the old idea of the aether as a fluid.
> >  							Regards,
> >  								Jack
>
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