Forest EngPhys 1
Physics for Scientists and Engineers
Class Policies
Syllabus
Virtual Demos
Chapt 15 Waves
http://english.ioa.cas.cn/rs/psk/200907/t20090708_22097.html
In a longitudinal wave the particle displacement is parallel to the direction of wave propagation. The animation below shows a one-dimensional longitudinal plane wave propagating down a tube. The particles do not move down the tube with the wave; they simply oscillate back and forth about their individual equilibrium positions. Pick a single particle and watch its motion. The wave is seen as the motion of the compressed region (ie, it is a pressure wave), which moves from left to right.
