(okay that's just my opinion)
seriously, it takes advantage of a physical principle of electromagnetism.
The part about moving currents create magnetic fields and moving magnets creating electric field, remember now from you last physics class??
When you supply power to this device, in the form of an amplified audio signal, the magnet dances, bumps, flips, and all out goes NUTS! in this little tube.
It is crazy to watch this, and all of the patterns that form while running.
really i tried to keep this simple, only using part i knew just about any average Joe could find around the house. Don't stick to my materials EXACTLY, expand use what ever you have!
-old pill bottle
-bits of wire
-hot glue (greatest stuff EVER!)
-coils or inductors from some TV's or speakers
-tiny pictures :P
-2 old CD's
-solder for the electrical connections.
Step 2: Hmmmm, where to start.
This part is the platform the magnet will rest on and bounce off of.
Step 3: Platforms, not only for politics.
make it look well done, you want someone else to look at this and think "man they know what they're doing," get it nice and round.
Step 4: JUST FIT ALREADY!!!
you don't want to get this whole thing done, and have to go back to trim up fragile pieces.
seriously this is important!
Step 5: Scavenge!
you could even make your own with enough copper wire.
this isn't exactly.... one of those optional steps... lol