Two labs, one law
Change the variables. See what happens.
Two skaters, equal and opposite forces
Watch the push, then see why the lighter skater travels farther.
Two waves adding
Two waves out of step, and the shape their sum actually makes.
Through a double slit
Send those waves through a pair of slits and watch the pattern build.
Build and probe circuits
Drop in components, wire them up, and watch the meters solve.
Calculus, drawn
Watch the strips thin into an integral, and a chord close onto a tangent.
Series and angles
The trick Gauss used to add a series, and where the compound-angle formula comes from.
Probability, animated
Sample means piling up into a bell curve, and the odds of waiting n tries for a first success.
Two labs, one law
Change the variables. See what happens.