Superposition of Transverse Simple Harmonic Waves

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This Demonstration shows the motion resulting from the superposition of two simple harmonic oscillations in perpendicular directions:
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Contributed by: Cássio Pigozzo (May 2011)
Open content licensed under CC BY-NC-SA
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Two interesting possibilities are superposition of two simple harmonic motions: the same frequency but varying phase difference; simple harmonic waves with different frequencies, producing Lissajous figures.
Permanent Citation
"Superposition of Transverse Simple Harmonic Waves"
http://demonstrations.wolfram.com/SuperpositionOfTransverseSimpleHarmonicWaves/
Wolfram Demonstrations Project
Published: May 23 2011