Dispersion
This link shows bending
of different colors through a prism
Super Position Principle
This link shows the interference of two traveling
waves
This link shows how a standing wave is produced from an incident and reflected wave
This link shows how a standing wave is produced in a string in a violin
Vibrations and Waves (Sound and Electromagnetic)
This site has many animations displaying different properties of waves and vibrations
Wave Animations for Sound and Light
This site also shows the Harmonics of a Standing Wave / How strings produce sound and various other wave animations
