This is a classic classroom demonstration of resonance, nodes, anti-nodes, and standing waves that has been described elsewhere.1,2 The modern age twist that we are advocating is the coupling of this classic demo with free (or relatively inexpensive) sound analysis software, thereby allowing for quantitative analysis of resonance while experimenting with a number of important variables.
REFERENCES
1.
http://www.oapt.ca/resources/democorner.html. Look for “Sound Demos with Rods and Tubes” by R. Meisel, originally published in September 2001.
3.
D.
Oliver
, J.
Underwood
, D.
Marotta
, J.
Kane
, and M.
Scott
, “Four free software packages related to the physics of sound,”
Phys. Teach.
51
, 101
–104
(Feb. 2013
).4.
J.
Kuhn
and P.
Vogt
, “Analyzing acoustic phenomena with a smartphone microphone,”
Phys. Teach.
51
, 118
–119
(Feb. 2013
).5.
E. D.
Blodgett
, “Comments on ‘Speed of sound in metal pipes: An inexpensive lab,’”
Phys. Teach.
47
, 31
–32
(Jan. 2009
).© 2014 American Association of Physics Teachers.
2014
American Association of Physics Teachers
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