Hurricane Balls

Thought it is such a simple demo and yet so captivating. Just 2 magnetic balls and a mirror, coupled with coloured lights.... simple apparatus and the effect is hypnotic! Not too sure what can be learnt here... sometimes videos are just for entertainment sake I guess. But if anyone of you out there thinks that there is a Physics concept to be learnt and grasped here, do feel free to leave some comments... Haha... I am also still learning!