Richard Harrison wrote:

Jim Kelley wrote:
"That`s because power doesn`t propagate, and hasten to add - neither do
Poynting vectors."

Words are not objects. They merely represent objects. We use
abstractions for brevity and clarity. Even the best say: "--the Poynting
vector or power density (watts per square meter)." See Kraus` 3rd
edition of "Antennas" page 73, under "Power Patterns".

If we send a pulse of energy down a transmission line, one
wonders where the power in the pulse is if not in the pulse.
--
73, Cecil http://www.qsl.net/w5dxp

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