Tendril perversion

Tendril perversion is a geometric phenomenon sometimes observed in helical structures in which the direction of the helix transitions between left-handed and right-handed. Such a reversal of chirality is commonly seen in helical plant tendrils and telephone handset cords.

Source: Wikipedia — Tendril perversion (CC BY-SA 4.0)

Tendril perversion

Tendril perversion is a geometric phenomenon sometimes observed in helical structures in which the direction of the helix transitions between left-handed and right-handed. Such a reversal of chirality is commonly seen in helical plant tendrils and telephone handset cords.

Source: Wikipedia "Tendril perversion" · CC BY-SA 4.0

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