June 03, 2005
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).
Heaviside, Oliver, Electromagnetic theory. Appendices: D. On compressional electric or magnetic waves. London, "The Electrician" printing and publishing company, limited.
Varadan, V. K., and Vasundara V. Varadan, Elastic wave scattering and propagation. Attenuation due to scattering of ultrasonic compressional waves in granular media - A.J. Devaney, H. Levine, and T. Plona. Ann Arbor, Mich., Ann Arbor Science, 1982.
Schaaf, John van der, Jaap C. Schouten, and Cor M. van den Bleek, Experimental Observation of Pressure Waves in Gas-Solids Fluidized Beds. American Institute of Chemical Engineers. New York, N.Y., 1997.
[This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article: Longitudinal wave.]
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