### Evaluation of Curl of B

### Maxwell's Equation 4

At this point, we shall assume that we are considering free space (the vacuum)
and that there is no current density **j**_{c} present.

*y* component:

For simplicity, assume that B_{z} = 0; the essential
features of our derivation will be retained.

### Differential Equation 2

This is another first-order partial differential equation relating the temporal derivative
of one component of **E** to the spatial derivative of another component of **B**.

"http://www.physics.udel.edu/~watson/phys208/wave-eqn2.html"

Last updated Dec. 8, 1997.

Copyright George Watson, Univ. of Delaware, 1997.