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 …

2020年11月25日 · 凯尔特石 (Celtic stone) 的得名源于十九世纪考古学家对欧洲和埃及史前石器的发现。根据它的运动特征，也被称为抖退石 (rattleback) 或振动石 (wobblestone)。在北美和欧 …

The rattleback is a top that defies convention. It spins freely in one direction, but if spun in the other direction, its rotational motion becomes unstable; it starts to wobble and then will begin …

Rattlebacks are semi-ellipsoidal tops that have a preferred direction of spin (i.e., a spin-bias). If spun in one direction, the rattleback will exhibit seemingly stable rotary motion. If spun in the …

2014年7月1日 · A rattleback is a canoe-shaped body that, when spun on a smooth surface, rotates stably in one direction only; when spun in the reverse direction it oscillates violently …

How Does a Rattleback Work? A quick explanation for the classic physics toy, the Rattleback™. The Rattleback takes the shape of an elongated asymmetrical semi-ellipsoid – a squashed …

Rattlebacks are an interesting toy with a strange behavior. Place the rattleback flat side up. When it is spun counterclockwise, the toy spins normally. When the rattleback is spun clockwise it …

2014年7月1日 · A rattleback is a canoe-shaped body that, when spun on a smooth surface, rotates stably in one direction only; when spun in the reverse direction it oscillates violently …

2013年5月2日 · A rattleback, also called a celt or wobblestone, is an interesting little piece of material with a roundish bottom and an unbalanced distribution of weight. When spun, it will …

2020年8月1日 · The rattleback, also known as the celtic stone (or simply, the celt), is a rigid semi-ellipsoidal (canoe shape) object which exhibits rotational preference. More precisely, when …