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Longitudinal wave
 
 

Longitudinal waves, also referred to as compressional waves or pressure waves, are waves that have vibrations along or parallel to their direction of travel and can be a wave in which the motion of the medium is in the same direction to the motion of the wave. Examples of longitudinal waves include sound waves (alternation in pressure, particle displacement, or particle velocity propagated in an elastic material) and seismic P-waves (created by earthquakes and explosions).

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[This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article: Longitudinal wave.]



 

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