If the rod is too small, a particle initially close to rod doesn't see the eight-movement of the rod, it seems to it that the rod is making circles.
To this particle, it seems that the rod is making circles. If the rod is too small, a particle initially close to the rod doesn't see the eight-like movement of the rod.
If the rod is too small, a particle initially close to the rod doesn't see the eight-like movement of the rod. To this particle, it seems that the rod is making circles.
If the rod is too small, a particle initially close to the rod doesn't see the eight-like movement of the rod. To this particle, it seems that the rod is making circles.