An oscillation about an equilibrium position or shape.

Vibration is generally interpreted as the cyclical (symmetrical or nonsymmetrical) fluctuations in the rate at which an object accelerates. In longitudinal vibration the direction of motion of the particles is the same as the direction of advance of the vibratory motion; in transverse vibration it is perpendicular to the direction of advance.

See also: Forced Vibration, Fourier Transform, Frequency, Human Vibration, Modal Analysis, Mode Shape, Period, Vibration Dose Value, Vibration Severity, Wavelength, Wavenumber.

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Human Vibration This site provides information related to human responses to: Hand-transmitted vibration, Whole-body vibration, Low frequency motion causing sickness and postual instability.