Nick
Frozen Fighter
Looking at old saved videos, what's your thoughts on this: 
http://www.youtube.com/watch?v=1M8ciWSgc_k

http://www.youtube.com/watch?v=1M8ciWSgc_k
Comprehension of alternating forces is the first step for comprehension of the universe.
It's a mechanically coupled system. I've seen other cool examples, one was ... oh I forget how they set it up, but it was a bunch of devices (things with springs or something) that were moving randomly, but they were coupled together through a base plate. After a half hour they all were in perfect sync - OH, I remember. It was a bunch of mechanical metronomes. The video is on YouTube, pretty cool.
It's not hard to understand, no different from
Every Engineers fear ...