***  For details on how to be removed from this list visit the  ***
***          CCP4 home page http://www.ccp4.ac.uk         ***


Hi,

> If I look at the Maxwell equations, it appears however, that at the
> maximal change of H, induced E is largest, and at maximal change of E,
> the induced H. So should not H peak, when E goes though zero? This


This is not quite correct.  Maxwell equations say that at maximal change of E 
the rot H is largest, not H itself. And large rot H does not mean that H must 
be large.

Please, have a look at the sixth and seventh images on the webpage:
http://www.math.umn.edu/~nykamp/m2374/readings/divcurl/index.html

which show a vector field which vanishes on an axis but its  rotation is  not 
null.

> Obviously something is wrong with my picture. Can anyone shed light
> on the phase relation between H and E in a wave packet? 

J.D. Jackson, "Classical Electrodynamics", second ed.,  equations 7.1-7.11.

cheers,
Andrzej Olczak

Reply via email to