# What's the equation that appears in the background of some scenes?

1. Oct 16, 2006

### Blahness

2. Oct 16, 2006

### Rach3

At 1:36 there is the Schrodinger equation applied to the hydrogen atom:

$$\left[ -\frac{\hbar^2}{2m}\nabla^2 - \frac{e^2}{r} \right]\psi(\mathbf{r})=E \psi(\mathbf{r})$$

Last edited: Oct 16, 2006
3. Oct 16, 2006

### Gokul43201

Staff Emeritus
Note 1: It is the equation for relative motion; notice the reduced mass $\mu$

Note 2: It is written in units where $2 \pi \rightarrow 1$ (no bar on the "h")

4. Oct 16, 2006

### Rach3

I'm unfamiliar with those units...

5. Oct 16, 2006

### Gokul43201

Staff Emeritus
They're Hollywoodian units.

Most likely, the graphics designer/editor thought the bar was a stylistic addition with no mathematical relevance.