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Re: Tesla Coil Operation - was "Harmonics"
D.C.
I'm sure you must mean that the pendula with the same length oscillate first,
the actual mass should have no bearing on harmonic frequency unless the mass
affectes the *effective* length of the pendulum.
Bryan Kaufman
> Original Poster: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
>
> to: Antonio
>
> An interesting corollary is to use a long shaft of semi-flexible material.
> Attach pendulums (sorry -- no penduli) of different mass. As the first
> pendulum in activated the pendulum of the same mass located further down
> the shaft will begin to oscillate as you described. The interesting part
> is that pendulums of different mass do not oscillate (very small amplitude
> if at all) which dramatically illustrates the concept of tuned circuits
> while other nearby circuits of different frequency (mass in our mechanical
> example) oscillate only a very small amount.
>
> We have made this exhibit for various museums and the children are always
> amazed that both nearby pendulums and pendulums of lighter mass don't start
> to oscillate first. It's a simple exhibit to fabricate and is very
> instructive for anyone to use prior to the Tesla coil demonstration of
> electrical resonance.
>
> DR.RESONANCE-at-next-wave-dot-net