Simulation Notes


 * CFL - timesteps stability - would be around 0.1
 * ppw - accuracy/freq - fd ~ 10 spectral ~ 2

A few formulas for simulations:


 * $$ \Delta t = \frac{\mbox{CFL} \Delta x}{c}$$
 * $$ f_{\mbox{max}} = \frac{c}{\mbox{ppw} \Delta x}$$