Re: [Phys-l] Teaching Special Relativity

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

Looking to authority is - or shoulde be - unpersuasive to real physicists.
If you doubt the truth of my comment, then pls exhibit the 
L-transformation that converts a pure elecctric field into a field that is 
;urely magnetic.
				Regards,
				Jack



On Mon, 6 Jul 2009, chuck britton wrote:

> On Jul 6, 2009, at Jul 6(Mon) 1:43 , Jack Uretsky wrote:
>
> > Strictly speaking, there is no magnetic-electric equivalence.  A
> > field that is purely magnetic in some reference frame can never be
> > transforme ( by a L-transformation into one that is purely
> > electric, and vice-versa.
> > 					Regards,
> > 						Jack
>
> Feynmann certainly leaves the impression that one can.
>
> But I'll be the first to admit (proclaim) that EVERYTHING that
> Feynmann writes is perfectly clear on first reading
> 			but much less so upon further contemplation!!
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