A crystal of table salt If you look at one of the rhombs, the images begin shaking or shifting. It is also noticeable that centers of the rhombs are becoming volumetric, looking like crystals. By the way, a crystal of table salt NaCl is of a similar model. One more illusion is seen here, the diagonals of the crystals rhombs look brighter, than in reality. A. Kitaoka, 2004 |