Oscillation 02
Oscillation 02 : (1) Generally, the process of varying above and below a mean value; usually, a periodic process. (Compare fluctuation, cycle, wave: Oscillations are commonly classified as follows: (a) a damped oscillation is one which is continually decreasing in amplitude; (b) a neutral, undamped, or persistent oscillation maintains constant amplitude; (c) an unstable oscillation, once started, grows in magnitude until it breaks down; (d) a stable oscillation is any one that is not unstable (i.e., it may be either damped or neutral); (e) a forced oscillation is set up by a periodic external force; and (f) a free oscillation occurs when a body is set into motion initially but no further external force is applied to it. (2) One single movement (or change) of an oscillating body from one extreme position to the other; in this sense, one-half of a cycle
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