One of us (ST) constructed a Blue Man Group® instrument1 from 2‐in PVC piping2 (internal radius r = 2.54 cm) as an undergraduate project. The instrument itself is shown in Fig. 1.
REFERENCES
1.
Blue Man Group®; www.blueman.com/experience/instruments.
2.
Nathan True, “Building a PVC Instrument“; devices.natetrue.com/pvc/pvcphase1.htm. It should be noted that the equation used to guess the lengths of pipes on this website is incorrect.
3.
Harold
Levine
and Julian
Schwinger
, “On the radiation of sound from an unflanged circular pipe
,” Phys. Rev.
73
(4
), 383
–406
(1948
).See also N. H. Fletcher and T. D. Rossing, The Physics of Musical Instruments, 2nd ed. (Springer, New York, 1999).
4.
Hugh D. Young and Roger A. Freedman, University Physics, 12th ed. (Addison‐Wesley, 2006), Vol. I, p. 533.
5.
Michael C.
LoPresto
, “Measuring end correction for a quarter‐wave tube
,” Phys. Teach.
43
, 380
(Sept. 2005
).6.
Don
Easton
, “Speed of sound in air,” letter to the editor
, Phys. Teach.
43
, 567
(Dec. 2005
).7.
Matthew Krumm and Sam Matteson, “Frequency dependence of end corrections for a pipe of circular cross section,” 2009 Spring Meeting of the Texas Section of the APS, AAPT, and SPS meeting, April 2–4 (2009). Also private communication Sam Matteson, September 2009.
8.
Vernier Software, 13979 SW Millikan Way, Beaverton, OR 97005; www.vernier.com.
9.
www.phys.unsw.edu.au/jw/flutes.v.clarinets.html#endeffect.
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© 2011 American Association of Physics Teachers.
2011
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