Take a look at these four knots, which may look similar but are all distinct. Which knot would be hardest to undo if you pulled on the two long ends of its ropes? Rank them in order from weakest to ...

Humanity has been using knots for thousands of years. They're not that complicated— they're just some string tangled up. 'Yet you can show people real pictures of knots and ask them for any ...

It works best when it's holding a load, which helps to keep the knot tight and secure. And it has many uses, for example, you can use these rope knots to fasten a mooring line to a ring or a post.

Each knot’s structure and topology was made abundantly ... There’s a video demonstration and an online version of the experiments if you’d like to try your hand at it. It’s always ...