Speaker
Adam Kadlecsik
Description
It is a known phenomenon, when a filled bucket is rotated around its axis the water surface takes up a paraboloid shape. A less trivial instance is when only the bottom of the bucket rotates, and the walls are stationary. In this case between the liquid near the rotating bottom and the stationary wall a velocity shear emerges creating rotating polygon-like shapes. We reproduce this phenomenon and build a physical understanding around it.
