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- From: logajan@ns.network.com (John Logajan)
- Subject: Cavitation and driven resonance
- Message-ID: <1993Jan3.182345.29563@ns.network.com>
- Sender: news@ns.network.com
- Nntp-Posting-Host: ns
- Organization: Network Systems Corporation
- References: <1993Jan3.043411.2231@asl.dl.nec.com>
- Date: Sun, 3 Jan 93 18:23:45 GMT
- Lines: 37
-
- I'd just like to add a little elaboration on the topic of driven resonance
- to Terry Bollinger's discussion of cavitation.
-
- If you set up system of standing waves as Terry suggests, you will have
- created a driven resonance system.
-
- In such systems (as Tesla was fond of dramatically demonstrating) energy is
- accumulated over many cycles, making the amplitude of each cycle successively
- larger until a limit is reached.
-
- For instance, in the case of a cyclical system in which the energy loss rate
- is proportional to the amplitude, and say, for instance, accounts for 10%,
- then the amplitude after several cycles will be the inverse of the loss rate,
- (or 10 times in this case) of the amplitude of the first cycle (or of a
- comparable single shot device.)
-
- This ratio of first cycle amplitude to later maxed out amplitudes is known as
- the "Q" of the resonance (though there is a more precise definition of "Q".)
-
- Another way to look at it is to see that the amplitude of the oscillation
- and its proportional fraction of energy loss (to heating, etc) will continue
- to grow until the amount of energy loss grows to just equals the amount of
- driven energy being input on each cycle. The oscillation amplitude stops
- increasing when all the input energy is being consumed to cover the energy
- loss mechanisms.
-
- Therefore if you have a very efficient oscillator (low fraction of energy
- loss per cycle) then you can have very high "multiplications" of the
- "driver" amplitude.
-
- A loss rate of 10% would mean an amplification of 10.
- A loss rate of 1% would mean an amplification of 100.
- A loss rate of 0.1% would mean an amplification of 1000.
-
- --
- - John Logajan MS010, Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428
- - logajan@network.com, 612-424-4888, Fax 612-424-2853
-