Rattlebacks, sometimes known as Celtic Stones or Anagyres, are a phenomenal physical curiosity.
No matter how you spin the semi-ellipsoidal top it will fight back and only spin in one direction, slowing and reversing as if by magic.
Even when you tap the top and it chooses to spin on its own in only one direction.
This violates the angular-momentum conservation law of physics, exciting and curious!
Curious Minds Did You Know? Atoms of which everything is made are 99.9999999% empty space!
Our Rattlebacks come in four colours to choose from: red, green, blue, or yellow.
One will be sent at random unless requested otherwise (stock depending) at checkout via the ‘Add Instructions For Seller’ button. If you cannot see the button please use our ‘Get in Touch’ tab at the bottom of the page or the ‘Chat With Us’ button and we will answer your message asap. Alternatively, call us with your selection at 01436 670806.
