This is the surface of Silicon Crystal, an exquisite hand-drawn poster by David Mankey in 1991, illustrating the tetrahedral geometry of the common Quartz Crystal. This was made possible by the Electron Tunnelling Microscope that allowed us to see the atomic world for the first time, to view the mysterious lattice networks known as electron fields. The small circles seen in this poster are the electron fields that are arranged tetrahedrally around their nuclei and bond together basic units of th