We39ve all heard of newton39s ball swinging party trick his cradle ahem but now it39s galileo39s turn to wow you with a hypnotic desktop distraction use the long bar included with the cradle to set all 15 metal balls swinging in motion at the same time each one is hung at a slightly different height to the others in a descending order meaning that as they swing their movements change to form a variety of mesmerising patterns it39s amazing to watch galileo39s pendulum i