Jimmie D wrote:
The radiation is not cancelled in the way ART means.

Sorry, I came in late. Here's a quotation from a web
site concerning wave cancellation that might help:

"... when two waves of equal amplitude and wavelength
that are 180-degrees ... out of phase with each other
meet, they are not actually annihilated, ... All of the
photon energy present in these waves must somehow be
recovered or redistributed in a new direction, according
to the law of energy conservation ... Instead, upon
meeting, the photons are redistributed to regions that
permit constructive interference, so the effect should
be considered as a redistribution of light waves and
photon energy rather than the spontaneous construction
or destruction of light."

If the EM energy doesn't change form, the destructive
interference from wave cancellation must result in
an equal magnitude of constructive interference
somewhere else - like squeezing a balloon. Sorry if
this has been said previously.
--
73, Cecil http://www.w5dxp.com