Re: Retarded potential and funny clocks


Sue... wrote:
> Mahmoud In My Dinner Jacket wrote:
> > Sue... wrote:
> > > http://web.mit.edu/8.02t/www/802TEAL3D/visualizations/light/EBlight/EB_Light_320.jpg
> > > From:
> > > http://web.mit.edu/8.02t/www/802TEAL3D/index.html
> > >
> > > <<Poynting's theorem permits only a global identification of the
> > > total input power, usually from a localized generator, with the total
> > > power radiated to infinity, not a local correspondence of -J . E dv
> > > with some specific radiated power, r^2 S . >>
> > > http://arxiv.org/abs/physics/0506053
> > >
> > > << It should be pointed out that the Feynman-Wheeler
> > > model runs into trouble when one tries to combine
> > > electromagnetism with quantum mechanics. These difficulties
> > > have yet to be resolved, so at present the status of this model
> > > is that it is ``an interesting idea'' but it is still not fully
> > > accepted
> > > into the canon of physics. >>
> > > http://farside.ph.utexas.edu/teaching/em1/lectures/node46.html
> >
> > The related lecture,
> > http://farside.ph.utexas.edu/teaching/em1/lectures/node45.html
> > makes retarded potentials appear a real physical basis for retarded
> > fields.
>
> A bean field has the potential to grow beans before the beans are
> planted. Is it unreal if you don't plant beans? :o)
>

Don't know why, but this reminds me of another joke ....

Man: "Waiter, what do you call this?"

Waiter: "It's bean soup, Sir."

Man: "I don't care what it's been, I want to know what it is now."

.

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