Interference Reflection Refraction Diffraction Happens when a wave turns back at the edge of a medium. The highest part of a wave. A disturbance moving through a medium. The number of waves per time period. The wave and medium motion are along the same line.
Related material Occurs when two identical waves with opposite directions interfere.
Damping Standing wave Wave front Refraction Angle between incoming propagation and normal. In this the speed of a wave depends on frequency. The distance from one wave crest to the next crest. The time per vibration.