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longitudinal sound waves |
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longitudinal sound waves,
pressure waves formed by the oscillation of particles or molecules parallel to the axis of wave propagation. The compression and expansion of such waves at high frequencies is the principle on which ultrasonography is based. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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