My World Tools

Wave Interference

Adjust wavelength and source separation to see the interference pattern change.

You might also find these useful

Vector AdditionDrag two vectors and see their sum drawn as the diagonal of the parallelogram.
PID ControlTune P, I, and D gains and watch how the system responds — overshoot, oscillation, or a smooth approach.
Parachute DescentJump, then deploy the parachute and see how the descent speed slows.
Bayesian EstimationSee how a positive test result updates your belief, given the base rate and test accuracy.