Using smartphones as hydrophones: two experiments in underwater acoustics

Physics Education

"Using smartphones as hydrophones: two experiments in underwater acoustics"
Martín Monteiro and Arturo C Martí

Published 11 April 2020 • © 2020 IOP Publishing Ltd

Physics Education, Volume 55, Number 3

The use of smartphone microphones in aquatic media is explored by means of two experiments. The first experiment consists of a simple time-of-flight measurement of the sound speed in water, while the second deals with the acoustic location—or ranging—of a distant object. As the underwater noise is considerable, the experimental details and the uncertainties are worth discussing.

Martín Monteiro et al 2020 Phys. Educ. 55 033013
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