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Some educational java applets to help visualize various concepts in math, physics & engineering.

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.
Coupled Oscillations Applet
Demonstration of longitudinal wave motion in oscillators connected by springs.
3-D Waves Applet
Demonstration of wave motion in 3-D.
Dispersion Applet
Dispersion and group velocity.