Английская Википедия:Hemihelix

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Файл:Animatic of a Rotating Hemihelix.gif
Animatic of a Rotating Hemihelix
Файл:Structural-Transition-from-Helices-to-Hemihelices-pone.0093183.s009.ogv
Video recording for a hemihelix with one perversion under water. Both ends are free to rotate.

Шаблон:Wiktionary A hemihelix is a curved geometric shape consisting of a series of helices with alternating chirality, connected by a perversion at the reversals.[1][2]

The formation of hemihelices with periodic distributions of perversions in slender structures is understood in terms of competing buckling instabilities generated by in-plane stresses.[3]

References

Шаблон:Reflist

Шаблон:Spirals


Шаблон:Geometry-stub Шаблон:Physics-stub