This lecture discusses what happens when two waves are super imposed on each other. Starting with a demonstration of two pulses on a string the observed behaviour is related to the wave equation. The discussion is then broadened to reflection of waves at boundaries and the general principle of superposition and phase difference is included.
This video lecture series by Prof. Roger Moore from the University of Alberta includes both screencast lectures, as well as comprehensive laboratory experiments to explain a whole range of topics in fluid mechanics and wave motion. The lectures are all offered in HD quality.
Major topics include: elasticity, fluid statics, fluid dynamics, oscillations, and waves.