is slowed by friction. Thus the centrifugal force is weaker near the bottom than higher up, leading to a secondary circular (helical) flow that goes outwards at the top, down along the outer edge, inwards along the bottom, bringing the leaves to the center, and then up again.

Applications

The phenomenon has been used to develop a technique to separate red blood cells from blood plasma, to understand atmospheric pressure systems, and in the process

1.Previous
3.Next