Definitions for "LONGITUDINAL WAVES"
Those waves in which the disturbance (back and forth motion) takes place in the direction of propagation. Sometimes called compression waves.
Commonly used term for compressional wave.(Basic Science/vibration/discussion002.htm)(Course Material/Ultrasonics/MeasurementTech/velocitymeasure.htm)(Course Material/Ultrasonics/Physics/wavepropagation.htm)
waves such as sound where the particles move or vibrate parallel to the direction of the wave.