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Wave-Particle Duality:

Velocity selector - time of flight

Low Energy Electron Diffraction (LEED)

Free Particle:

Complex numbers

Complex wave function - 3D representation

Complex wave function - 2D representation

Superposition of 2 complex waves - 3D representation

Superposition of 2 complex waves - 2D representation

2D representation of a Gaussian wavepacket

Graphical wavepacket builder

Molecular Rotations:

Classical rigid rotor

Particle on a ring - 3D representation

Particle on a ring - 2D representation

Electromagnetic wave polarization in a rigid rotor

Spherical coordinates

Molecular Vibrations:

Classical harmonic oscillator

Eigenfunction integrator in a harmonic potential

Eigenfunction integrator in an anharmonic potential

Molecular oscillations in a harmonic potential

Molecular oscillations in an anharmonic potential

Molecular oscillations in a double-well potential

Unitary Operators

Translation and Evolution Operators

Rotation Operator

The Born-Openheimer Approximation

Classical Adiabatic Coupling