Roy Lewallen wrote:

It looks like time to remind readers that charge isn't the same as
electrons. On a wire, charge moves at nearly the speed of light, while
electrons only go a few miles per hour. Most of the relevant theory
actually deals with the interaction of fields and charge, not fields and
electrons.

Roy Lewallen, W7EL

Good point. Charge can be holes, or electrons, or even ions. It is the
fields which move at the speed of light. Charge tends to have to hang
around with the charge carriers. But once a field arrives someplace, it
will immediately influence the motion of charges that happen to be
hanging around there locally.

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