# A Conceptual Question

1. Sep 18, 2007

### mcquarr

I am asked to define the phase of a complex function (a wave) in words and physically. I don't know a better way than to draw two different sine functions and show the phase difference on the graph.....Any suggestions?

2. Sep 19, 2007

### Mentz114

Not much more to it. You could write a wave equation -

$$\phi = e^{i(kx - \omega t)}$$

and transform with a phase change

$$\phi ' = e^{i(kx - \omega t + \theta)}$$

3. Sep 19, 2007

### Demystifier

What kind of wave? A quantum wave function? A classical wave?