What strange power is this?? It's science in action!
First, give one of the Rattleback Celtic Stones a tap on one end. Rather than just rock back and forth, it will start spinning by itself!
Next, spin on of the stones in a clockwise direction. Suddenly, the stone will STOP and REVERSE, spinning in the OPPOSITE direction all by itself! Of course, you can make a magic gesture just at the moment that the stone stops, if you want to make it look magical!
Now, take the other stone and spin it. That stone will also stop and reverse directions, going first clockwise, then counterclockwise.
Of course, since you know which way to spin the stone to make it stop and reverse, you can give the other stone to your spectator to spin along with you. Since his stone will be the opposite of yours, if he spins it the same way, his will just keep on spinning! Yours will stop and reverse!
Want to know how these work? It's science! See the HISTORY AND TRIVIA section below!
Many adults remember these novelties from their childhoods. Great for icebreakers at cocktail parties or place favors at dinner parties!
The Rattleback Celtic Stones make great party favors! They are a puzzle that are just a lot of fun to spin and watch! Since they work all by themselves, the party guests can amuse themselves with no help needed!
You'll get TWO stones per package. One reverses when spun clockwise, the other will reverse if spun counterclockwise. Of course, you can use them over and over again.
Each stone is made of translucent red plastic, and carefully cut and engineered for perfect balance, unbalance and spinning.