じゅんけっしょう
準結晶
1. quasicrystal; paracrystal
2. QuasicrystalA quasiperiodic crystal, or, in short, quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can continuously fill all available space, but it lacks translational symmetry. While crystals, according to the classical crystallographic restriction theorem, can possess only two, three, four, and six-fold rotational symmetries, the Bragg diffraction pattern of quasicrystals shows sharp peaks with other symmetry orders, for instance five-fold.
Read “Quasicrystal” on English Wikipedia
Read “準結晶” on Japanese Wikipedia
Read “Quasicrystal” on DBpedia
Read “Quasicrystal” on English Wikipedia
Read “準結晶” on Japanese Wikipedia
Read “Quasicrystal” on DBpedia
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