Rhombic Icosahedron Helices

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Two different helices can be assembled from rhombic icosahedra attached face to face. The default values of the controls produce a helix with small pitch. In this case the rhombic icosahedra are also aligned in five columns with connections at their tips. With a helix of rhombic rhombohedra the assembly becomes tubular. To produce the helix with large pitch, set the three controls (align, diameter, expand) all the way to the left.
Contributed by: Sándor Kabai (February 2008)
Open content licensed under CC BY-NC-SA
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"Rhombic Icosahedron Helices"
http://demonstrations.wolfram.com/RhombicIcosahedronHelices/
Wolfram Demonstrations Project
Published: February 5 2008