Certain knots, like this trefoil, can be formed from vortices within the quantum fluid
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By manipulating quantum fluids, researchers were able to form liquid knots that would never unravel. These could help unravel strange quantum objects from the early days of the universe.
When small eddies, called vortices, form in a fluid, they form loops and form knots, like loops on a string. However, while threads can form knots that cannot be untied without the help of scissors, knotted vortices in fluids can be untied more easily. They can explode into a spread swarm…
