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Resonant Tube W-d3a
A function generator driving a speaker generates standing waves in a long hollow tube; the end can be open or closed and the tube probed by a tiny microphone. Fishbane Chapter:   14.6 HRW 9th:   17.07 Reese Chapter:   12.919 RHK 5th:   19.6 SJ 3rd Chapter:   13.7 PIRA DCS classification:   3D30.16

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Physics Lecture Demonstrations at the Department of Physics and Astronomy
The Johns Hopkins University