Now, using algebraic topology, researchers from the UK have developed a scheme for creating optical vortices in propagating laser fields to form knots and links (Nature Phys. 6, 118–121 ...
You can tie as many butterfly knots into a single line of rope as needed, which is especially handy with multiple climbers on a line of rope. But it's not just useful for climbing. The alpine ...
After all, tying knots is something humans have been ... so the findings might not generalize to all knot types. Additionally, while the researchers tested multiple presentation methods, real ...