Dave wrote:
"Jim Kelley" wrote in message
...


Cecil Moore wrote:


If an EM wave exists, it's
Poynting vector is ExM. The energy in that individual wave *must*
be conserved. If that energy is not conserved, the conservation
of energy principle is violated.

When a wave is canceled, there is no wave. Therefore there can be no
energy associated with that wave. If there is energy, then it must be
associated with a wave that is not canceled. Same thing is true when I
have candy. If it's not in my left hand, then it must be in my right
hand. It's all very profound.



but you can neither create nor destroy energy, so it can't just be
'canceled' it has to be either converted to some other form of energy or go
somewhere else... it can't just disappear.

Hi Dave -

I think most people here are already quite aware of that. To what
energy do you specifically refer?

ac6xg