According to the video you can see below, the right way to think about it is as a standing wave. What does that mean? The video shows a very interesting demonstrator that shows how that works.

A Ham radio operator will tell you all about the standing wave ratio (SWR) of his antenna, and he may even have a meter in the shack to measure it. He’ll know that a 1.1 to 1 SWR is a good ...