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The Surprising Math Hidden In How You Tie Your Shoelaces

2 imagenes, 8 preguntas, 1 definicion, 1 dato, 4 videos, 2 encuestas sobre The Surprising Math Hidden In How You Tie Your Shoelaces en ARTi.

Proyectos relacionados

The math of shoelaces

Imágenes

How the reef knot creates balanced tension

dash Alternating directions creates a flat, self-tightening square knot.

Why the granny knot is structurally weak

dash Matching the starting knot and bow directions creates a weak, twisting knot.

Fun Facts

Fun Fact

Shoelace tips: The plastic or metal tip at the end of a shoelace is called an aglet, which prevents fraying.

Quizzes

Quiz

What physical force keeps a tied shoelace knot from immediately falling apart?

Quiz

Which basic starting knot direction sequence produces a strong reef knot?

Quiz

What happens to a reef knot when you pull the two outer ends of the shoelaces?

Quiz

What is the primary difference between a weak granny knot and a strong reef knot on a shoelace?

Quiz

What mathematical property describes a knot that cannot be untied without cutting the loop?

Quiz

Why does a standard granny knot sit crookedly on top of a shoe?

Quiz

Which knot-tying method, invented by Ian Fieggen in 1982, is known as the fastest way to tie a secure shoelace?

Quiz

In what year did Ian Fieggen introduce his famous ultra-fast shoelace-tying technique?

Glosario

Glossary

granny knot (noun)
An insecure knot made by crossing the ends of a cord twice in the same direction. In 2005, Terry Moore demonstrated at TED how this unbalanced structure causes shoelaces to constantly untie.

Gossip

Gossip

How often do your shoelaces come untied?

Gossip

Which shoelace knot style do you use?

Videos

dash How the reef knot creates balanced tension

dash In 1982, Ian Fieggen designed the world's fastest shortcut to tie a perfectly balanced shoelace knot.

dash Why the granny knot is structurally weak

dash The two ways to tie a starting knot