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In this case, the particles of the medium move parallel to the direction that the pulse moves.

As the energy is transported from left to right, the individual coils of the medium will be displaced leftwards and rightwards.

Energy will begin to be transported through the slinky from left to right. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil left and right. Transverse waves are always characterized by particle motion being perpendicular to wave motion.Ī longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. In this case, the particles of the medium move perpendicular to the direction that the pulse moves. As the energy is transported from left to right, the individual coils of the medium will be displaced upwards and downwards. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil up and down. Categorizing waves on this basis leads to three notable categories: transverse waves, longitudinal waves, and surface waves.Ī transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. One way to categorize waves is on the basis of the direction of movement of the individual particles of the medium relative to the direction that the waves travel. Longitudinal versus Transverse Waves versus Surface Waves It is common to categorize waves based on these distinguishing characteristics. While all waves share some basic characteristic properties and behaviors, some waves can be distinguished from others based on some observable (and some non-observable) characteristics.