List of Available Demonstrations

• Quantum measurement with Schrödinger’s coin: app | details
• Superposition of stationary states: animated | spacetime
• Evolution of arbitrary initial states on a classical string and quantum infinite square well: animated | notebook
• Classical and quantum probability densities in harmonic oscillator potential: animated
• Gaussian quantum wavepacket superposition for a free particle in 1D: V0<0 | V0=0 | V0>0 | notebook
• Solutions to Schrödinger’s equation in regions of constant potential: animated
• Solutions to Schrödinger’s equation in finite step potentials: animated | potentials
• Graphical method to find bound state solutions: animated
• Time evolution and measurement in a two-state system: notebook.
• Spherical harmonic decomposition of the earth’s surface: animated
• Probability densities of hydrogen stationary states in the (x,z) plane:
  • n = 1,2,3 states showing ±25 a0
  • n = 4 states showing ±31.25 a0
  • Random nodal patterns showing ±30 a0 (try to guess the quantum numbers)
• Azimuthal traveling waves in hydrogen stationary states: animated
• Addition of angular momentum J = L+S for an electron (s=1/2) in a p-wave (ell=1): image
• Table of 3D commutators: Entry at row,col gives the commutator [row,col]. Hamiltonian commutators assume a central potential.
• 3D probability densities of superpositions of hydrogen stationary states (link will be added).
• Time-independent perturbation of a 1D infinite square well: notebook.