Peter,

An article called Low Frequency Coil Q, by Bill Bowers, is reproduced in

the

Low Frequency Experimenter's Handbook, Page 65

That's probably where I saw it, as I didn't belong to the LWCA back when
Bill wrote a lot of those articles.

And Jim makes a very good point -- the U.S. work done at the 1 watt level
may help you create an excellent flamethrower at 1 kw. Thought has to be
given to breakdown voltages.

John Andrews