User:Daviddwd/sandbox

$$\vec{E} = -\nabla{\varphi}$$$$\left[-\frac{\hbar^2}{2m}\nabla^2 +V\left(\vec r,\, t\right) \right] \psi\left(\vec r,\, t\right) = i\hbar \frac{\partial}{\partial t}\psi\left(\vec r,\, t\right)$$* 