# Interpreting ##\hat{e}_z## in Maxwell's equations

Hi, I'm trying to interpret a form of Maxwell's equations, but I can't seem to figure out where the term $\^{e}_z$ comes from in the following equation:
##
\frac{\partial{\vec{E}_t}}{\partial{z}}+i\frac{\omega}{c}\hat{e}_z\times \vec{B}_t=\vec{\nabla}_tE_z
##

Paul Colby
Gold Member
This is a guess because more background on the source of this equation is needed. My guess is that the problem being worked is assuming a plane wave field dependence?

Will you please clarify the notations? What does ##t## stand for?

nrqed
Hi, I'm trying to interpret a form of Maxwell's equations, but I can't seem to figure out where the term $\^{e}_z$ comes from in the following equation: