The magnetic hourglass is a cool example of a classic sand hourglass but with a magnetic twist.
It’s a cool educational gizmo and a great home or office decoration.
How does it work? The regular sand is replaced by a magnetic iron dust and on the basis of the hourglass there is a small magnet, you can also use bigger magnets and play with the effects.
Its an entertaining way to teach your kids about time, hourglasses and magnetism.