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Bloogle W-d3d
Whirl a corrugated plastic tube to produce sound. At least five tones can be heard. Fishbane Chapter:   14.6 HRW 9th:   17.07 Reese Chapter:   12.919 RHK 5th:   19.6 SJ 3rd Chapter:   13.7 PIRA DCS classification:   3D30.35

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