Triple helix
From Infogalactic: the planetary knowledge core
In geometry, a triple helix (plural triple helices) is a set of three congruent geometrical helices with the same axis, differing by a translation along the axis. As with a single helix, a triple helix may be characterized by its pitch and diameter.
Structures in the form of a triple helix include:
- Collagen helix[1]
- Triple-stranded DNA[2]
- Triple-threaded worm gears[3] and screws[4]
References
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