An example of cymatics, {wiki} or the effect of sound waves on particles. Push play or got to Metacafe. You may want to turn the volume down somewhat -this caused my cats to run from the room! -via Videosift
Damn, what is worng with my cat? He does not get scared or run away from any kind of noise. Barking noises? He doesn't care. Cat's fighting noises - loves'um. And now after I read what you said about your cats I tried this clip on him expecting him to react in some way. All he did was go take a whiff at the speakers.
Daaaamn! And to think, I wasted all that time in college with a bong and a can of Play-doh. Guess I should have hooked up with what, the amplitude modulation geeks instead? Oh well, live & learn.
all is full of waves
it's all around us