Re: NEC-LIST: E-M demos/simulations/animations

Chuck Counselman wrote:
> Unfortunately, none of them does much to answer this list's hot
> question -- of whence, on a half-wavelength wire dipole, most of the
> radiation comes!
>
> -Chuck.

Hi Chuck,

I have just come home from ACES-2000. Ed Miller and John Schaeffer
gave a full day short course on "Where does the radiation come from".

The cute answer, but accurate, is "radiation is caused by the
acceleration of charge."

For a half wave dipole, this is where the travelling charge reverses
at the dipole ends, giving two spherical shells of radiation from the
tips of the wire. This was ably demonstrated by bistatic k-space
imaging, which can show where the radiation comes from when viewed at
a distant point.

For more details contact Ed or John.

http://www.mariettascientific.com/

-- 
sringe_at_actrix.gen.nz-------------------------------------------------
Steve Inge, ZL2BDV, Engineering Analyst, Broadcast Communications Ltd.
147-161 Tory Street, Wellington, New Zealand. fone: +64 4 914 8036.
Home: 9 High Street, Island Bay. Fone +64 4 3838 422, Fax: +64 4 3838 691.