Boundary Behavior: Pulses

zippyhippy

Hey guys,

I'm confused as to what happens regarding the amplitude when a pulse moves across mediums.


1. Let's say a pulse is moving from a string of low density to a string of high density:

I know that the reflected amplitude will be less than the incident's, and also the transmitted amplitude will be smaller than the incident. But what is the relationship between the transmitted's amplitude and the reflected's amplitude?

2. What about a pulse that moves from high density to low density?

Thanks in advance.