knots

Online Textbook for Braid groups and knots and tangles

Unpicking How to Measure the Complexity of Knots

Celtic Code: Drawing knots with Python

A simple way to measure knots has come unraveled

Topological Mechanics of Knots and Tangles

Tangled Physics: Knots Strain Intuitive Physical Reasoning

Teen mathematicians tie knots through a mind-blowing fractal

High-speed military amphibian skims the waves using Surface Effect | Textron is developing a remarkable new Surface Effect amphibious transport for the US Navy and Marines. It can carry 50 tons of cargo, skims the waves at 50+ knots, and operates in water just four feet deep.