The Gold RattlebackMagic Makers now offers a device that'll convince any audience you can control an object's movements with your mind, in high quality alloy to bring your presentation to the next level. The Magic Makers Rattleback defies the laws of conservation of angular momentum, displaying a spin reversal when spun clockwise. It'll swing counter clockwise with ease, but once you try to swing it clockwise it'll rattle until it comes to complete stop and reverses its