Roy Lewallen wrote:
It'll be easy enough to show that's false. If I set up a simple
measurement with a piece of Air-Dux in series with a resistor, a couple
of calibrated current probes, and a dual-channel scope, will you believe
the results? Or would you rather have someone else make the measurement
or do it yourself?

Sorry for the double posting, but I just thought of an experiment
that will settle everything.

Take W8JI's 100 uH coil. Keep the spacing between coil 1 and
coil 100 the same at one foot. Get rid of all the other coils
leaving only coil 1 and coil 100 separated by one foot of air.
Use coil 1 as the primary coil and measure the coupling from
coil 1 to coil 100. If it is 100%, you will have made believers
out of everyone and we can stop this silly argument.

The lumped circuit theory says that all the flux in coil 1
links to coil 100 one foot away just as if they were
both tightly wrapped around a toroid.

So there's the challenge. Simply prove that 2" dia coils one
foot apart in air transfer all the energy from one coil to
the other. Piece of cake.
--
73, Cecil http://www.qsl.net/w5dxp