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Free Oscillations

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Free Oscillations 

(or natural oscillations), oscillations that occur in a mechanical, electrical, or some other physical system, in the absence of an external influence, owing to the originally accumulated energy (as a result of an initial displacement or initial velocity). The character of free oscillations is determined primarily by the system’s intrinsic parameters, such as mass, inductance, capacitance, or elasticity. In real systems, free oscillations are always damped because of energy dissipation; when the losses are large, the oscillations become aperiodic. (SeeOSCILLATIONS.)
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Figure 6 shows free oscillations in the time domain of the beam base (320 kHz with amplitude of 1 nm), the beam free end, and the CD tip end.
Characterization of probe dynamic behaviors in critical dimension ... by Feng, Shaw C.; Joung, Che Bong; Vorburger, Theodore V. / Journal of Research of the National Institute of Standards and Technology
The free oscillations have long periods ranging typically from a few minutes to nearly an hour.
Ringing Earth's bell: what makes our planet constantly quiver? by Monastersky, Richard / Science News
 
 
 
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