Graphic Relation between Amplitude and Sound Intensity Level

Autor/inn/en	Pinochet, Jorge; Cortada, Walter Bussenius; Peña, Mauricio Sánchez
Titel	Graphic Relation between Amplitude and Sound Intensity Level
Quelle	In: Physics Teacher, 59 (2021) 6, S.467-469 (3 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-921X
Schlagwörter	Science Experiments; Acoustics; Introductory Courses; Science Education; Audio Equipment; Science Equipment; Measurement Equipment; Graphs + Suchen Sie Ihr Suchwort? Akustik; Einführungskurs; Naturwissenschaftliche Bildung; Audio-CD; Messinstrument; Grafische Darstellung
Abstract	We present a simple experiment that allows us to demonstrate graphically that the intensity of sound waves is proportional to the square of their amplitude, a result that is theoretically analyzed in any introductory wave course but rarely demonstrated empirically. To achieve our goal, we use an audio signal generator that, when connected to a loudspeaker, produces sine waves that can easily be observed and measured using an oscilloscope. The measurements made with these instruments allow us to create a plot of amplitude vs. sound intensity level, which verifies the mathematical relationship between amplitude and intensity mentioned above. Among the experimental errors, the plot obtained is in excellent agreement with what is theoretically expected. (As Provided).
Anmerkungen	American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://aapt.scitation.org/journal/pte
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01