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, describe the knotted fluid vortex they created in the lab—a scientific first, they ...

The rules of water balloon fight club are as follows. 1- All new people have to fight, 2- Protect your nuts at all times, 3- He who fills the fastest wins. Number two may be the most important rule in ...

My kids love to have water balloon wars. I do too if I am being honest. The drag for me is that neither of my kids can tie their own balloons and tying off a bunch of balloons that will hit you is no ...

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 ...

I, for one, have no idea how to tie a water balloon correctly. If you're like me and manage to look like you've already lost a water balloon fight before the fight already started, you may want to ...