- Next: Introduction Up: Simulations in Waves and Previous: List of Figures The Wave Equation and Other PDEs Wolfgang Chrisitan, Susan Fischer, Andrew Antonelli Introduction Classification of Partial Differential Equations Physics of Partial Differential Equations Classical Wave Equation Klein-Gordon and Schrdinger Equations Nonlinear Klein-Gordon Equations Diffusion Equation Numerical Methods ...webphysics.davidson.edu/Faculty/wc/WaveHTML/node4.html