Comment by periblepsis on What is displacement current in electromagnetism? How can it be applied to a capacitor to filter signals if it isn't a real current?

These are the meanings of displacement. Both. My way of wording the first, is to say that it's when there is a tiny shift in the electron sea, which is extremely small -- less than an atomic diameter -- and takes place in less than a nanosecond, generally. Anyway, +1. Good stuff.