Category:Celtic rattlebacks

**rattleback**
	semi-ellipsoidal top which will rotate on its axis in a preferred direction, but which, if spun in the opposite direction, becomes unstable, ‘rattles’ to a stop and reverses its spin to the preferred direction
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Subclass of	top;
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	Q1738399;
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Català: La forma més típica s'assembla a un semi-el·lipsoide.

Deutsch: Ein Keltischer Wackelstein ist ein physikalisches Spielzeug.

English: A rattleback, also known as an "anagyre", " celt", "Celtic stone", "rebellious celt", "rattlerock", "spin bar", "wobble stone" or "wobblestone" and by the product names "ARK," "Bizzaro Swirls," "RATTLEBACKS," "Space Pet" and "Space Toy," is a semi-ellipsoidal top which will spin on its axis in a preferred direction. But, if spun in the opposite direction, it becomes unstable, "rattles", stops and reverses its spin to the preferred direction.

Français : Anagyre est un nom, le nom donné à un objet paradoxal

Nederlands: Een wiebelsteen ( Engels: rattleback of celt) is een bootvormige draaitol die een voorkeursdraairichting heeft. Wordt hij in de verkeerde richting gedraaid, dan zal het tollen onstabiel worden, stoppen en zal de draairichting omkeren.

Русский: Кельтский камень — волчок, способный во время вращения в определённую сторону менять направление вращения.