Re: Resonance Theory

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

The streamers do add capacitance to the secondary, reducing the resonant
frequency ( and reducing the Q, as well, because they are lossy).  However,
I would think that this is a very short term (microsecond, or millisecond
at most, time scale).  In very still air, there might be warm air, ions,
dust, etc. that accumulates that decreases the breakdown voltage or might
serve to change resonant frequency.



Tesla list wrote:
> 
> Original poster: "Matt Shayka by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<lightningcreator-at-hotmail-dot-com>
> 
> List,
> 
> I have a theory that I came up with. I need to tell this story first:
> 
> One day, while in a theme park, I was waiting for a few friends to get off a
> roller coaster. Behind the bench I was sitting on was a fancy metal fence,
> and one end of it was cut off. I dunno why. But I put my finger on it, and
> started pushing on it slowly and steadily out of boredom. I kept the pace
> steady, and the section of fencebegan to bounce wildly. then, as the rest of
> the fence started to creak, the frequency of the fence lowered and my finger
> was no longer in sync with the fence. I thought about it, And I also thought
> about the swing so often used to descibe resonance. as the amplitude
> increases, the frequency lowers because the seat has a greater distance to
> travel. And the observation that makes me belive this:
> 
> I was fiddling with my coil one night. I had recently gotten it to work
> muuch better than it was by removing the topload completly. (just a wire
> now) It now throws a 10" streamer with half the original 1kW tank circuit.
> (still pretty bad, but improving...) I watched the length of the streamers
> carefully. They start off at 8", grow to 10" over a 3 sec. period, then
> stop, and start all over again.(the output never actually "stopped".)
> 
> I think it starts off at a high frequency, and then lowers as the amplitutde
> increases.  It would be real hard to make a primary do that...
> 
> Anyone else have this happen?  Comments?
> 
> Matt Shayka
> 
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