Here is a very different twist on the kinetic sculpture concept by Marcus Raetz. Raetz is a Swiss artist whose body of work repeats the themes of perception and illusion. Although I have seen many other sculptures by Raetz, this is the only kinetic piece I have seen by him. He definitely is continuing to explore illusion here. Two spinning cylinders constructed of rotating metal plates create a surprise illusion in the negative space, and one that changes!
Your can see more of Marcus Raetz work here.