This demonstrates Newtons principle that action and reaction are equal and opposite. If one of the steel balls is lifted and allowed to fall back at one end, then one will swing out the same distance at the other end.
Delivery & Returns
We endeavour to dispatch orders within 5-7 working days but during particularly busy times of the year might see that move by a day or two.
Currently, Star School & Office Supplies only accept orders from and deliver to, Ireland, Northern Ireland.
We have no minimum order, however, orders under €75.00 will be charged carriage of €6.00.
All orders over €75.00 will be delivered free of charge in Republic of Ireland.
If you need a higher quantity than we have in stock not a problem, Call or Email us today to place you order over the phone.