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天钩
这是一个100多年前的玩具，Sky Hook是通过向钩端添加重量来操纵其重心。一旦你知道了这个秘密，你就可以用指尖轻松地平衡它。。。或者在铅笔头上。。。甚至在你的鼻尖上！
平衡玩具在19世纪很流行。追溯到古代中国和印度，西方的平衡玩具通常是用软木材雕刻而成，传统上是用锡或金属制成的。平衡玩具的插图可以在18世纪的教育文献中找到。这种玩具平衡运动的物理原理引起了人们的兴趣和惊叹。
有长款，短款两种款式可选，下单请备注。
视频演示：
https://cloud.video.taobao.com//play/u/1078603494/p/1/e/6/t/1/398173492795.mp4
Sky Hook
The Sky Hook allows for its center of gravity to be manipulated by the addition of weight to the hooked end. Once you know the secret, you can easily balance it on the tip of your finger... or on the end of a pencil... or even on the tip of your nose!
Balancing toys were popular in the 19th century. Dating back to ancient China and India, where they were most often carved from soft wood, the western balancing toys were traditionally made from tin or metal. Illustrations of balancing toys can be found in educational literature from the 18th century. The physics governing the movement of such toys intrigued and amazed people.
Available in 2 styles,
Long: length 9.3cm
Short: length 7cm
