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RE: [TCML] Tesla coil history - which came first?



Elihu Thompson had the first high frequency coil in the generally accepted form about a year before Tesla. He commented in a letter he would not fight Tesla for the credit.

At 11:43 AM 19-09-11 -0700, you wrote:
I believe it was Heinrich Hertz that realized early on that when a
capacitive charge was discharged through a coil/spark gap that a
separate additional coil/spark gap of the same length, in close
proximity, would create a sympathetic discharge. He published his
findings in 1888. This would most likely be the earliest example of
wireless transmission of energy, and thus, the air resonant coil.

Shannon Weinhold
Klasdja Intelligent Innovations

-----Original Message-----
From: Jim Lux [mailto:jimlux@xxxxxxxxxxxxx]
Sent: Monday, September 19, 2011 6:56 AM
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Tesla coil history - which came first?

On 9/19/11 5:52 AM, Antonio Carlos M. de Queiroz wrote:

> Experimentally, it's quite evident that the roots of the classical
> Tesla coil lie in the development of the induction coil, that has
> practically the same structure, but works in a (not so) different way.
>

I wonder when someone realized that you didn't need the iron core of the
induction coil and that the resonance aspect was important..



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