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Stratifying Rhombic Triacontahedral Quasicrystals

By: George Francis, U. Illinois, and Tony Robbin, New York
With: MA492: Arturo Guerrero, Sasha Lamtyugina, Yijing Chen SP17, Han Chong SP13, Dan Pugliese SP14
And: illiMath: Geoff Ehrman REU08, Matt Gregory REU06
Based on JavaScript codes by Zach Reizner (MA198fa13), Gregg "greggman" Tavares, and others.

Note the "gimbal lock" jump near 12 o'clock due to the "lookat" camera paradigm.