Sound Waves in a Tube: Measuring Sound Pressure Profiles Using Smartphones

Autor/inn/en	Soares, A. A.; Cantão, R. F.; Pinheiro, J. B., Jr.; Castro, F. G.
Titel	Sound Waves in a Tube: Measuring Sound Pressure Profiles Using Smartphones
Quelle	In: Physics Education, 57 (2022) 5, Artikel 055023 (7 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
Schlagwörter	Science Instruction; Science Experiments; Telecommunications; Handheld Devices; Educational Technology; Acoustics; Physics; Secondary School Science; Scientific Concepts + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Telekommunikationstechnik; Unterrichtsmedien; Akustik; Physik
Abstract	We present an experiment designed to study standing waves in a tube with one closed end. Two smartphones are used, one to emit a sound signal with a chosen frequency and another equipped with a microphone to detect the sound pressure level inside the tube. Due to the finite diameter of the tube, the standing wave node (or antinode) appears slightly outside of its opened end so the end correction is applied. Results show a good agreement with the theory, making this proposal suitable to be applied to secondary school classes. It is a low cost experiment and has the potential to increase the understanding of this physical phenomenon by secondary students. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01