(Let's start with a topic we didn't quite finish last time)
Even though no piece of matter follows a wave as it propagates through a medium -- the material itself simply oscillates back and forth -- the wave can transmit energy and momentum from one location to another.
Okay, now we can discuss "What happens when two waves meet?"
Perhaps you might recognize a real-world application of this special result:
What happens when the waves have different amplitudes? We'll find out in just a few days.
Now for some fun examples of resonance and standing waves in the real world.
Copyright © Michael Richmond. This work is licensed under a Creative Commons License.