SL waves
Shows how a wave is made of a series of out of phase oscillations, changing phase relationship between pendulums changes wavelength. Build simple version here: 1D Waves simulation (GeoGebra) Illustrates how the displacement position graph relates to compressions and rarefactions. How the law of reflection is consistent with Huygen's model. How Snell's law is consistent with Huygen's model. Shows longitudinal wave and...