Pop-up tents are weirder than you think

Summary by Krater

Steve Mould explains the mathematics of folding pop-up tents and car window shades made of metal bands, showing why they form three-layered circles and how twisting them relates to crystal structures like nitinol wire.

From the video

Answers: How do you fold a pop-up tent and what is the mathematics behind it?

• pop-up tent folding mathematics
• metal band circles
• nitinol wire elasticity
• crystal arrangements and stress
• elastic knot loops

What it concludes

• Pop-up tent poles and car window shades use metal bands that form three-layered circles when folded correctly with full twists.
• Nitinol is an elastic material that switches between two crystal arrangements under stress, unlike regular metals.