Pendulum Wave

If you know someone who's crazy about physics, they're sure to love this enthralling present!When lightly pushed, the fifteen pendulum balls attached to the frame form four different incredible patterns, which they move seamlessly through! They change formation for around one minute and then revert to their original position - just like magic!Any scientist worth their salt knows this is no spell though… It's just good old amazing science, of course!Not suitable for children under 36 months. Warning: Choking hazard. Approx. size in box: 42 x 26 x 17 cms.