ERIC HELLER / SCIENCE PHOTO LIBRARY ERIC HELLER / SCIENCE PHOTO LIBRARY
Quasicrystal. Computer model of a quasicrystal pattern. The crystals are a type of solid structure where there is long-range order with five-fold symmetry, which results in a non- repeating pattern. The crystal patterns, first discovered in aluminium-manganese alloys in 1984, are generated according to rules related to the Fibonacci sequence and the golden ratio.
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