This simulation shows time-dependent 2D quantum bound state wavefunctions for a rectangular hard-walled potential.  Position, momentum, and energy of the states can all be viewed, with phase shown with color.  Eigentstates can be selected using the energy level diagram. Multiple-energy-eigenstate wavefunctions can be created through changes in the amplitude and phase of the basis states using spinors, or through the creation of Gaussian, elliptical, or square wavefunctions with the mouse.