The arrival of the crystal skull at the Smithsonian instigated Walsh’s research into determining the artifact’s origin and establishing its authenticity. With the assistance of Scott Whittaker, the ...

Silicon, Si: Index: Silicon is a semiconductor in group IVA of the periodic table with atomic number 14, an atomic weight of 28.086, ... Silicon has the diamond cubic crystal structure with a lattice ...

Wilson A. Bentley became fascinated with the crystalline structure of individual snowflakes on his parent’s Vermont farm. By adapting a microscope to a bellows camera, and after years of trial and ...