Expanding Ball of 30 Octahedra
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A ball of 30 octahedra (model 1) is expanded along axes of its rotational symmetry. In this way, two balls of 120 octahedra (models 2 and 3) and two rings of octahedra (models 4 and 5) are obtained.
Contributed by: Izidor Hafner (January 2014)
Open content licensed under CC BY-NC-SA
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"Expanding Ball of 30 Octahedra"
http://demonstrations.wolfram.com/ExpandingBallOf30Octahedra/
Wolfram Demonstrations Project
Published: January 17 2014