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Science > Electromagnetics > Re: How does a ...
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Re: How does a Faraday disk really work?

by blackhead <larryharson@[EMAIL PROTECTED] > Aug 6, 2008 at 04:34 PM

On 2 Aug, 16:59, Benj <bjac...@[EMAIL PROTECTED]
> wrote:
> On Aug 1, 8:41=A0pm, Salmon Egg <Salmon...@[EMAIL PROTECTED]
> wrote:
>
> > This electric field may be called the Lorentz force or something
> > similar, but it seems to be something that must be added to =A0the
> > equations I have already listed. This arises simply out of relativity
> > where the EM field has to be a tensor and has to transform properly
wit=
h
> > a Lorentz transformation.
>
> > Questions:
>
> > 1. =A0Can this Lorentz force be derived without invoking relativity or
> > another law of nature? That is, are Maxwell's equations sufficient?
>
> I see that you've come to realize that all the faith-based physics
> dogma as spewed by PBS and others simply doesn't cut it. The dogma
> that says, "All electromagnetic phenomena can be "explained" by
> Maxwell's Equations" is wrong. They can't even explain a simple
> Faraday Generator! =A0So, No, Maxwell's equations alone are not
> sufficient. And, Yes, this is an excellent place to poke your nose!
>
> It is the Lorentz relation that is missing. It is related to Maxwell's
> equations but is not one of them! =A0It is often taken to be the
> defining relation for B. =A0The Lorentz relation is written as:
>
> F =3D q(E +(v X B)) =A0And the law does not depend upon the inertial
> reference frame in which the various quantities are measured. .
>
> For more information I urge you to examine Jefimenko's expositions on
> the subject, especially his derivation of the transformations of the
> Lorentz force. =A0"Electromagnetic Retardation and the Theory of
> Relativity" by Oleg D. Jefimenko available from Amazon.com.

But the Lorentz Law is a special case of Faraday's Law in differential
form when B is time independent. I don't understand where you're
getting this idea from that Maxwell's equations aren't sufficient to
explain the Faraday generator.

Title:
 A Simple Proof that the Lorentz Force, Law Implied Faraday's Law of
Induction, when B is Time Independent

http://adsabs.harvard.edu/abs/1973AmJPh..41..713D


Deriving the Lorentz force equation from Maxwellapos;s equations
http://ieeexplore.ieee.org/Xplore/login.jsp?url=3D/iel5/7814/21481/00995632=
..pdf?temp=3Dx




> --------------
>
> "Some people say I'm a dreamer,
> But I'm not the only one!
> I hope one day you'll join us,
> And Electromagnetics can live as one! "
 




 10 Posts in Topic:
How does a Faraday disk really work?
Salmon Egg <SalmonEgg@  2008-08-01 17:41:43 
Re: How does a Faraday disk really work?
Benj <bjacoby@[EMAIL P  2008-08-02 08:59:24 
Re: How does a Faraday disk really work?
Salmon Egg <SalmonEgg@  2008-08-02 12:12:01 
Re: How does a Faraday disk really work?
"Timo A. Nieminen&qu  2008-08-03 08:28:59 
Re: How does a Faraday disk really work?
"Timo A. Nieminen&qu  2008-08-03 08:55:20 
Re: How does a Faraday disk really work?
Benj <bjacoby@[EMAIL P  2008-08-03 00:58:26 
Re: How does a Faraday disk really work?
blackhead <larryharson  2008-08-06 16:34:57 
Re: How does a Faraday disk really work?
Salmon Egg <SalmonEgg@  2008-08-06 22:23:19 
Re: How does a Faraday disk really work?
blackhead <larryharson  2008-08-07 05:54:16 
Re: How does a Faraday disk really work?
Benj <bjacoby@[EMAIL P  2008-08-07 21:48:41 

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