2.2 Sound - Standing waves Sound 2.2 Standing Waves wave on...

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1 Sound 2.2 Standing Waves wave on a string wave in an air column Resonance Musical Instruments Standing waves Standing waves on a string with two ends fixed. node node anti-node The wave doesn’t move Positions of nodes and antinodes are constant Standing waves • Standing waves are harmonic waves that show oscillation but do not propagate in space. •Standing waves are produced by two waves with the same wavelength moving in opposite directions. • Opposite moving waves are produced by reflection at the end of the structure. •Reflection at a fixed end produces a node •Reflection at a free end produces an antinode. Snapshots at different times. The points on the standing wave display harmonic oscillations with different amplitudes. Standing waves are produced by superposition of two identical waves moving in opposite directions node anti-node The sum of sine waves is a sine wave. Reflection from a fixed end produces a node incident reflected sum fixed end node The reflected wave is inverted.
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This note was uploaded on 06/01/2009 for the course PHYS phys2c taught by Professor Okamura during the Spring '09 term at UCSD.

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2.2 Sound - Standing waves Sound 2.2 Standing Waves wave on...

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