How do you tie water in a knot? First you make parts of it into vortices, which move more like long continuous strings than groups of autonomous molecules. Then you need to tangle those strings ...

Tying a knot in a smoke ring sounds like a feat worthy of those enjoying a certain kind of cigarette. But treat smoke as an example of a fluid, and it becomes a physics problem. Now for the first time ...

Reporting in the journal Nature Physics, William Irvine and Dustin Kleckner, physicists at the University of Chicago, have created a knotted fluid vortex in the lab — a scientific first, they say. The ...

Learn how to tie the Water Knot step by step and understand when and where it’s best used. This knot is commonly used with flat webbing and tubular tape, making it a key knot for climbing, rappelling ...

From our star’s excess heat to the complexities of fluid turbulence, many a mystery might be unravelled by the bane of the headphone wearer – knots What if atoms weren’t solid spheres, as most ...