On Tue, 25 May 2004 16:43:37 -0700, Jim Kelley
wrote:

Would you say that a rock, thrown vertically, never was thrown just because
it returned to hit you on the head?

Ed
wb6wsn

Electromagnetic waves can cancel, but rocks can't. Could that maybe
make a difference?

Hi Jim,

This is like mistaking electrons and charge displacement. Sound like
Ed described two rocks hitting with an inelastic collision which
results in power dissipation.

73's
Richard Clark, KB7QHC