Determining the Speed of Sound as a Function of Temperature Using Arduino

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Hahn, MD (Author) Other; de Oliveira Cruz, FAD (Author) Other; Carvalho, PS (Author) FCUP

Journal

Title: PHYSICS TEACHER

Vol. 57

Pages: 114-115

ISSN: 0031-921X

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 11 Citations

Scientific classification

FOS: Social sciences > Educational sciences

CORDIS: Physical sciences > Physics

Other information

Authenticus ID: P-00Q-4SC

DOI: 10.1119/1.5088475

Abstract (EN): When sound waves are taught at the secondary level, the speed of propagation of sound is one of the most important characteristics to be analyzed. However, it is very common in textbooks that the value of sound speed in air is considered constant regardless of the experimental conditions. The great question is that since sound is a mechanical wave, its speed is influenced by the medium of propagation and also by the temperature. In most cases, the techniques reported for that goal usually make use of expensive equipment and techniques that may not be affordable and/or easy to implement in schools, which is an experimental limitation for the teachers to show this influence on their students. In this work, we present a low-cost experimental apparatus, controlled by the open source electronic platform Arduino®, with which it is possible to determine the speed of propagation of sound as a function of the temperature for a short measuring region, thus enabling the students to verify experimentally this important feature of sound waves. © 2019 American Association of Physics Teachers.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2