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Saturn's Strange Hexagon Recreated in the Lab

submitted by TheFreak

1 decade 4 years 7 months 3 weeks ago

From the YouTube post:

Physicists Ana Claudia Barbosa Aguiar and Peter Read of the University of Oxford in the United Kingdom performed the experiment depicted in this video. Using a 30-liter cylinder of water placed on a slowly rotating table they created an artificial "jet stream" by employing a much smaller and much faster rotating ring inside the main cylinder. By introducing fluorescent dye into the artificial "jet stream" they discovered that stable eddies formed and became stronger over time eventually forming stable regular polygonal shapes with each eddy located at a vertex. Also, in varying the rate of rotation of the large cylinder with respect to the small ring, they discovered that the larger the relative difference in rotation rates the less sides the resulting polygon had.