A video shared by the Twitter account Amazing Physics on Oct. 27, 2021, showed a person squirting two dots of ink, one green and one red, into a clear vat of fluid. That person then grabbed a crank ...

Knots are everywhere—from tangled headphones to DNA strands packed inside viruses—but how an isolated filament can knot itself without collisions or external agitation has remained a longstanding ...

Have you ever wondered what would happen if you dropped a sphere of jelly on floor? The answer to this and other pressing questions in fluid dynamics have appeared on the arXiv preprint server as a ...

If you’ve ever whacked the bottom of a ketchup bottle to get that tasty tomato goop flowing, you’ve put some serious physics to work. Ketchup is a non-Newtonian fluid. So are toothpaste, yogurt, ...