Rattleback Spinning Curiosity/Celtic Stone/Anagyre (single)
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.
Shipping Options (UK Mainland)
Orders placed before 2:00 p.m. GMT will be processed the same day (Monday-Saturday). Delivery options are selected at checkout.
Standard Delivery
- 2-3 business days.
- £2.95.
- FREE delivery over £40.
First Class Delivery
- 1-2 business days.
- £3.95.
Express Courier Delivery
- 24 hours.
- £7.99.
For shipping to locations outside of the UK mainland, see our full shipping policy.
Returns
Unopened goods may be returned for a full refund within 30 days of receipt of your order. For further details, see our full returns policy.
Phone
+44(0)1436 670806
Our Address
Curious Minds Science Ltd (Grasshopper Toys)
112 West Princes Street
Helensburgh
Argyll & Bute
G84 8XD
United Kingdom
