Keith Dysart wrote:
I follow the principle, but I am not convinced that it is a
"considerable" amount of energy.

This is a follow up to my other reply. An example
closer to the 1/2WL dipole would be a Z0=600 ohm
1/4WL open stub made out of resistance wire such
that the input impedance is 50+j0 ohms. The resistance
wire simulates the radiation "loss" in a 1/2WL dipole.

100w---600 ohm 1/4WL stub---open

The 100w source sees a 50 ohm load because the stub
is made out of resistance wire.

What is the forward power on the stub at the feedpoint? _______

What is the reflected power on the stub at the feedpoint? _______

Stubs like this one are easily modeled with EZNEC.
--
73, Cecil http://www.w5dxp.com