Richard Harrison wrote:
The statements need qualifications. Perhaps waves "cancel" without
ceasing to exist.

Some waves cancel without ceasing to exist. But if the cancellation
is permanent, the waves simply cease to exist.

My speculation is that two radiated fields which cancel don`t eliminate
each other at all.

That is true, but that is not what we are discussing. We are discussing
permanent wave cancellation within the confines of a transmission line.

On wires, it`s different. Connect same-frequency energy exactly
out-of-phase, and you have a short circuit.

No you don't, Richard. Maximum current occurs at a short circuit.
The net current from two canceled waves is zero. The net voltage
from two canceled waves is zero. It is neither a short circuit
nor an open circuit to the canceled waves. It is simply wave
cancellation. To the canceled waves, it looks like both a short
circuit to the two voltages and an open circuit to the two currents.

It is the same thing that happens at the air to thin-film interface
in perfect non-glare glass when the incident beam is coherent.
--
73, Cecil http://www.qsl.net/w5dxp



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