amplitude: Quick Facts

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Photos

A line graph showing peak current in amperes on the vertical axis versus angular frequency in units of ten thousand radians per second on the horizontal axis. The curve rises sharply to a peak near 3.5 on the horizontal axis, marked with a dotted line labeled omega sub r, then falls symmetrically. The background is light blue.

Diagram with three panels showing sound wave representations: (A) evenly spaced blue lines for air at equilibrium, (B) alternating dense and sparse blue lines for compressions and rarefactions, and (C) a yellow sine wave illustrating amplitude and wavelength.

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Topics

How does sound travel?decay time exponential decay amplification wave radiation wave motion phase absorption interference frequency scattering wavenumber period Doppler effect