Twisters in Love

If we make one of the windmills rotate, the other will also start rotating. After a few rotations one of them might stop, but it is started off almost immediately by the other one. If the first one rotates too fast, the other is at a standstill, dithering, not knowing which way to rotate.

There are magnets in the sails of the rotors, with the same poles facing the outside. The sails repel each other. The rotation of the rotors is chaotic, as a result of changing position of the rotors.

The movements of the windmills resemble the behaviour of a pair of lovers. Sometimes they sand facing each other and sometimes they turn their backs on each other.

Slowly rotating magnetic twisters resemble somewhat Newton's cradle: one stops and the other starts moving, then it stops again. In fact, the magnetic interaction substitutes collisions and the momentum is transferred from one magnet to the other exactly as it was in Newton's pendulum.

Similarly to the magnetic pendulum, the twisters move in somewhat chaotic manner. It is difficult to predict which of them will move and which will stop. It is caused again by rather complicated interactions between magnets, changing rapidly with their relative position.

Quickly moving twister is unable to transfer much energy to the partner in the still. This is like in atomic collisions, where fast particle must experience many single collisions before they deposit efficiently their energy to the matter in which they slow down.