Kent from Sacramento, CA gave us a little info on some waves you can’t surf.
On your June 11 show you asked what was the difference between AM and FM radio. And although your players came up with a couple of good analogies, I would like to submit mine. As a former fifth grade teacher, I would demonstrate the difference using a slinky stretched between two students. AM waves would be shown by one student raising and lowering her hand causing an amplitude wave. FM waves were shown by the student pushing her hand forward, then pulling the slinky back. This would cause a frequency wave to transmit down the toy. This gave the class a concrete visual.