Animation: Two-Dimensional Coincidence Lattices Obtained by Rotating Two Hexagonal Lattices

The animation rotates a hexagonal lattice on top of an identical one. For certain angles some lattice points coincide. This is emphasized by stopping the rotation for a few seconds.
Due to small aberrations in the drawings, the coincidence is not perfect, but close enough to show the development of a "Coincidence Site Lattice"

With frame With frame as PDF

go to 7.1.2 The Coincidence Site Lattice

© H. Föll (Defects - Script)