Oscillations and Waves Ripple Tank (2-D Waves) Applet Ripple tank simulation that demonstrates wave motion, interference, diffraction, refraction, Doppler effect, etc. 2-D Waves Applet Demonstration of wave motion in 2-D. 3-D Waves Applet Demonstration of wave motion in 3-D. Coupled Oscillations Applet Demonstration of longitudinal wave motion in oscillators connected by springs. Dispersion Applet Dispersion and group velocity. Acoustics Loaded String Applet Simulation of wave motion of a string...