Richard Harrison wrote:
There is no magic
instantaneous transfer of energy from one turn to another within a coil.

It's not magic and it cannot occur at faster than light
speed. Magnetic coupling between air-core coils does
exist. It is just not of the magical magnitude asserted
by W8JI.

You wouldn't use the same argument on an iron-core
coil, would you, where virtually all of the coil#1
flux does indeed link with coil#N?
--
73, Cecil http://www.w5dxp.com