In this paper, I propose to use the theremin (Fig. 1), which is one of the oldest and simplest electronic musical instruments, to help students in introductory physics courses (in secondary school or university) learn some basic concepts related to wave physics and electricity.

The theremin was invented by the Russian musician and scientist Léon Theremin in 1920. The most characteristic feature of this instrument is that it is played without touching it. Although this is not a generally well-known instrument for either students or teachers, almost everybody has listened to it, at least in classical movie soundtracks, e.g., The Wizard of Oz (directed by Victor Fleming, 1939) or Spellbound (directed by Alfred Hitchcock, 1945), or in classical pop songs such as “Good Vibrations” (The Beach Boys, 1966) or “Please Go Home” (The Rolling Stones, 1966). In order to arouse students’ interest in the theremin, teachers can show these...

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