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Pennsylvania State University
Acoustics and Vibration Animations: Demonstrations: The Simple Pendulum
A series of graphics, downloadable animations and text describe and explain the motion of a pendulum. Some sections require an understanding of calculus.
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Ucsc Electronic Music Studios: Simple Harmonic Motion
Simple harmonic motion is described and explained and related to a Helmholtz resonator. Relation between simple harmonic motion and a vibrating air column is clearly made in an effort to explain why a pop bottle resonates when blowing...