Wave Crank — xmdemo 082

A transverse wave (the green one) is one in which the oscillations are perpendicular to the direction of wave propagation.

A longitudinal wave (the red one) is one in which the oscillations are parallel to the direction of wave propagation. It is interesting that a longitudinal wave sets up regions of compression and rarefaction. Notice also that the compression and rarefaction always occur at the point which is at its equilibrium position.

 

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