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ClueBot NG (talk | contribs) m Reverting possible vandalism by 160.7.28.181 to version by Debartolo2917. Report False Positive? Thanks, ClueBot NG. (4048470) (Bot) |
Pbsouthwood (talk | contribs) Changing short description from "Semi-ellipsoidal top" to "Semi-ellipsoidal spinning top" (Shortdesc helper) |
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{{Short description|Semi-ellipsoidal spinning top}}
[[File:Rattleback in action.ogv|thumb|A rattleback in action]]
A '''rattleback''' is a semi-ellipsoidal [[top]] which will rotate on its axis in a preferred direction. If spun in the opposite direction, it becomes unstable, "rattles" to a stop and reverses its spin to the preferred direction.
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