Check out this wheel of purple fire!

It's not everyday that you combine weird physics with defunct medical equipment and get a success. (Although I would love to see one of those old tobacco-smoke-up-the-butt bellows filled with nitroglycerin.) The thing that looks like a pizza-cutter is a Wartenburg Pinwheel, an old piece of neurological equipment that… » 1/18/13 8:20am 1/18/13 8:20am