Superimposed photograph of a stretched looped elastic ribbon during its pop-out shape transition. Selected for an Editors’ Suggestion and a Synopsis in Physics.

From the article:

Stretching an Elastic Loop: Crease, Helicoid, and Pop Out
Yasuaki Morigaki, Hirofumi Wada, and Yoshimi Tanaka
Phys. Rev. Lett. 117, 198003 (2016)

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