Studio : Tedco

Publisher : Tedco

Binding : Toy

Product Description
More commonly known as "rattlebacks", these "space pets" work based on very complicated dynamics laws. Their motion has been studied by many scientists and few of them could come up with exact explanation.Can be an inspiring toy! Also called a Celt or wobblestone, is an oblong boat-shaped object which, when placed on a rough horizontal surface and made to rotate about a vertical axis, sometimes stops rotating, begins to oscillate (wobble), then starts rotating in the reverse direction. After being spun, and just prior to reversing direction, a Space Pet rocks up and down on its long axis. Space Pets have a counterclockwise spin bias, resulting from the shape of their smooth ellipsoidal base and the distribution of mass with respect to the axis of spin. Hank Review: It's true. The darn thing has a preferred direction of spin. You can tell that it has something to do with the shape of the curved side, and you'll try to explain how it does what it does in your mind, but unless you're a bonefied genius, you'll never be completely sure about exactly how it operates. I'll occasionally sit and flick this thing over and over again for disturbingly long periods of time, and never lose fascination. It's so simple, and yet so perplexing. Like trying to understand why hard concrete darkens when you pour water on it. It's consistant, it's simple, and it's right in front of me, but I always have to face the fact, eventually, that I quite simply don't get it. Get one. If nothing else, it's a unique lucky charm.
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