# Plane wave, electric field

1. Oct 31, 2007

### Ayame17

When talking about a transmitted plane wave incident on a plane, ie.

$$\underline{E} = E_0 \^i e^\iota^(^\underline{k}.\underline{r} - \omega t)$$

what is meant by the "real-time" form of the incident electric field?

2. Oct 31, 2007

### Chris Hillman

Where was this phrase used? Was it in a context where some kind of "time delay" make sense?

3. Oct 31, 2007

### Ayame17

No, it was about a plane wave on an interface where part was reflected and part was transmitted...it had the angular frequency shown and then mentioned that from above, which wasn't a phrase I recognised.

4. Oct 31, 2007

### Claude Bile

Sounds like it is a reference to the E-field at some point in space, in other words, the spatial variation is being ignored (in which case one would get a sinusoidal variation in time).

It is hard to say though without knowing the exact context.

Claude.