Re: [Phys-l] phase relationship

[Brian Whatcott <betwys1@sbcglobal.net>]

ludwik kowalski wrote:
> OOPS,
> I was not the author of the message. I deleted the author's name;  my  
> name was added from the signature file.
>
> Ludwik
> /snip/
>   
> >  there's an error in your argument.   
> > See
> >
> > http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=35
> >
> > for a graphic (you can pause the display by clicking inside it)
> > showing the correct phase relationship, or
> >
> > http://en.wikipedia.org/wiki/Electromagnetic_radiation
> >
> > for a detailed account -- the section 'properties' pictures the
> > correct phase relationships, and 'derivation' solves M's equations for
> > a general propagating wave, finishing with the equation relating E and
> > B which shows that they are in phase.
I have heard this statement before - and it conflicts with my mental model
of the process of propagation - say from a dipole.
  It would be easy to observe whether the in-phase assertion is true:
for low frequency radio signals,  (10kHz to 100kHz) the signal may be 
observed
as an electric field, or as a magnetic field via suitable sensors to a 
scope.

Brian W