Fast new technique for measuring the resonance frequencies of high Q systems.
A technique for measuring the resonance frequencies of an aluminum bar (used as a gravitational antenna) with high accuracy is presented. This method is based on the positive feedback of the bar, and is much faster than the others commonly in use.
Cosmelli
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Istituto di Fisica ''G. Marconi,'' Universita di Roma, Rome, Italy.
Frasca
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