Basics of sound in air: Correspondence with electromagnetic waves

Basics of sound in air: Correspondence with electromagnetic waves

The wave equation of sound is developed starting from the equations of fluid mechanics for the velocity and pressure variation in air. The equations for sound are analogous to Maxwell's equations for linear polarized electromagnetic plane waves: the pressure variation and the velocity correspon...

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Veröffentlicht in:American journal of physics 2021-02, Vol.89 (2), p.157-163
1. Verfasser: Zürcher, Ulrich
Format: Artikel
Sprache:eng
Schlagworte:
Electromagnetic waves
Electromagnetics
Fluid mechanics
Magnetic fields
Nonlinear equations
Sound
Velocity
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container_title American journal of physics
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creator Zürcher, Ulrich
description The wave equation of sound is developed starting from the equations of fluid mechanics for the velocity and pressure variation in air. The equations for sound are analogous to Maxwell's equations for linear polarized electromagnetic plane waves: the pressure variation and the velocity correspond to the electric and magnetic fields, respectively. The order of magnitude of sound properties is explained in terms of the amplitude and energy density of the corresponding wave.
doi_str_mv 10.1119/10.0002050
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ispartof American journal of physics, 2021-02, Vol.89 (2), p.157-163
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1943-2909
language eng
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source AIP Journals Complete
subjects Electromagnetic waves
Electromagnetics
Fluid mechanics
Magnetic fields
Nonlinear equations
Sound
Velocity
title Basics of sound in air: Correspondence with electromagnetic waves
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