The strange world of quantum mechanics

Classical magnetic needles

The Stern-Gerlach experiment

The conundrum of projections; repeated measurements

Probability

The Einstein-Podolsky-Rosen paradox

Variation on a theme by Einstein

Optical interference

Quantal interference

Amplitudes

Working with amplitudes

Two-slit inventions

Quantum cryptography

Quantum mechanics of a bouncing ball

The wavefunction.