Re: 7.1Hz, how the heck did Tesla succeed?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>



> Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
 > > http://www.pupman.com/listarchives/1995/january/msg00002.html
>
> Uhh.. I don't know that you can have a "high Q" resonator with "small
> random frequency changes". I suppose if you define Q as the energy stored
> vs the energy lost in one period, it would work. Imagine an oscillator
with
> a rechargeable battery... It could be very crummy spectrally, but still
> only lose a tiny fraction of the stored energy in each cycle, but this
> isn't the usual definition of Q as applied to resonators.

When someone said you would only have to track the frequency changes I
thought that would not work because the energy you put in at one frequency
would remain at that frequency.
Then I thought about.

That is only true for a linear time invariant resonant system.  In such
systems  bandwidth and the fraction of energy lost per cycle are equivalent.

In a time variant system where say the capacitance changes over time,
durring one time frame the energy could be at one frequency and durring a
different time frame at a different frequency.
Unrelated to the lossyness of the resonator. I imagined a system that had
step changes in C when the C voltage was zero.

Incidentally at either pole (and possibly other places) the Q of the earth
resonance would not be effected (assuming a circular symmetric earth as
viewed from a pole)  by the equatorial bulge.

Robert (R. A.) Jones
A1 Accounting, Inc., Fl
407 649 6400