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ERIC Number: EJ830502
Record Type: Journal
Publication Date: 2007-Jul
Pages: 11
Abstractor: As Provided
Reference Count: 15
ISSN: ISSN-0143-0807
Visualization of Sound Waves Using Regularly Spaced Soap Films
Elias, F.; Hutzler, S.; Ferreira, M. S.
European Journal of Physics, v28 n4 p755-765 Jul 2007
We describe a novel demonstration experiment for the visualization and measurement of standing sound waves in a tube. The tube is filled with equally spaced soap films whose thickness varies in response to the amplitude of the sound wave. The thickness variations are made visible based on optical interference. The distance between two antinodes is easily measured using a ruler and the determined wavelengths of the modes of the standing wave are in excellent agreement with the theory. (Contains 10 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A