Peter O. Brackett wrote:
Nickola Tesla would be rolling over in his grave if he could hear us
discussing a possible dichotomy between lumped and distributed systems.
Nickola "lived" in the intersticies between the wave theoretic and circuit
theoretic fabrics of reality.

Some very interesting information on that subject is contained
in: "Class Notes: Tesla Coils and the Failure of Lumped-Element
Circuit Theory" by K. L. Corum (KB1EUD) and J. F. Corum (K1AON)

http://www.ttr.com/corum/index.htm

More very good information on RF coils is found in an IEEE
paper by Drs. Corum at:

http://www.ttr.com/TELSIKS2001-MASTER-1.pdf

It's hard to look at the Figure 2 diagram of "a capacitively
tuned resonator" and not see a 75m mobile antenna with top hat.

Equations (32) for velocity factor and (51) for characteristic
impedance are of particular value to amateur radio operators.

Having a good approximation for characteristic impedance and
velocity factor for a bugcatcher mobile loading coil allows
an understandable analysis of a mobile antenna system. I'm
working on a web page based on those two papers.
--
73, Cecil http://www.w5dxp.com