Acoustic impedance

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(at a surface)

The complex quotient of the sound pressure and the volume velocity through the surface.

Note: This definition is valid only for sinusoidal vibrations in the steady state.

Reference: Icharge currentIntensity.EIlluminanceEnergy.CContrastCelsius (previously Centigrade)Capacitance. (modified)

Please note that this is the term as it stands in the original IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Dictionary edition (1970-1989)