Stanislav Slanev, Hafize Shaban,
Shebnem Shaban, Aneta Marinova
Professional School of Economics - Shumen
https://doi.org/10.53656/nat2022-5.05
Abstract. An experimental setup for measuring the speed of sound in air is described. The experiment can be reproduced with readily available tools, in any school. A smartphone was used, running tone generating apps available for free along with a digital oscilloscope. A sound frequency is assigned using the tone generator and is reproduced by the smartphone’s loudspeaker and is further observedusing the digital oscilloscope. A pipe is used as a resonator, and by dipping one end in water the air column length is adjusted. Some of the systematic effects leading to error in results are researched and evaluated.
Keywords: sound; speed; air; smartphone; tone generator; oscilloscope
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