Place it on table or desk, and witness the beauty of gravity and momentum at work Sand included.</br> The magic of the sand pendulum has been studied for centuries and now you can bring this unique wooden accent to your desktop. </br> Start this pendulum gently swinging, and watch the path the pendulum takes through the sand, swinging slowly back and forth into beautiful elliptical loops and whorls. </br> Different start angles provide different patterns. witness the beauty of gravity and momentum at work.</br> Suitable for Office,den,living room,bedroom,desktop furnishing articles household act the role ofing is tasted.</br> </br> Specification:</br> Item Type: Sand Pendulum </br> Colour:Black </br> Material: Plastic, Iron, Plating Natural Sand</br> Product Weight:700g</br> Size:39x15cm<br> </br> Package Includes:</br> 1 x Sand Pendulum </br>