This sketch explains my 'mobile-vocabulary'.
One can see three different mobiles with always five hanging elements.
Mobile Nr. I shows a basic system. All elements are part of one system only.
Mobile Nr. II shows the basic system with two added systems. One system with two, the other one with three hanging elements.
Mobile Nr. III shows the basic system with three added systems whereat two systems are interconnected.
With mobile Nr.III it gets obvious that mobiles can be complex. Within this complexity it gets more interesting to observe them. With regard to the movements of the elements basically nothing new happens. The movements of the single elements are similar – they can swing, they can twist cw or the other way round, they can turn slowly or quickly and they can bounce. The systems where the elements are part of, are describing the main way and the direction.

