| Abstrakt: |
The water drain is aligned with the rotation axis, and a vortex appears and remains above the drain. At that time, the vortex has moved a few millimeters off the drain and the dyed water has reached a height of 5 cm. After 25 rotations, it broadens and comes to rest as a hollow-core vortex. Vortices are found across a wide range of spatial scales and environments, including the water spiraling down a bathtub drain and the whirlpools of cooling plasma that sink into the Sun's interior. [Extracted from the article] |
