Gene Fuller wrote:
The Poynting vector, generally described as ExH, is the energy flow
density. It has units of energy/area/time.

Rate of energy flow through an area? Sure sounds like joules/sec
(power) to me. The IEEE Dictionary agrees.

In practical terms the Poynting vector ExH and the Poynting theorem have
little utility for radio amateurs.

I particularly like Johnson's treatment where the forward power
and reflected power have separate Poynting Vectors. :-)

A quote from Ramo & Whinnery's, _Fields_and_Waves_:

"... it is often convenient to think of the Poynting Vector as
the vector giving direction and magnitude of energy flow at any
point in space."
--
73, Cecil http://www.qsl.net/w5dxp