Crystallography on the iPhone

Ivan Orlov and Gervais Chapuis have released an iPhone app to help teach crystallographic symmetry.

The app simulates the symmetry environment of the 17 planar (two-dimensional) symmetry groups which you can decorate with various objects. You can create colorful designs a la M.C. Escher and also effortlessly master the main crystallographic concepts:

  • Planar groups
  • Hermann-Mauguin symbols
  • Symmetry operations
  • Asymmetric unit
  • General and special positions