Crystal Structure: Miller Indices and Compactness

This lecture covers the basics of crystal structure, focusing on indexing plans and directions, crystal lattice, and the concept of compactness and mass density. The instructor explains how to experimentally determine the structure of crystals, particularly cubic structures, and the significance of motifs and Bravais networks. The lecture also delves into Miller indices for designating reticular directions and planes in cubic systems, as well as the calculation of proper atoms per cell and the volume of a mesh. Through examples and theoretical explanations, students learn about the symmetry of crystal structures and the relationship between atomic radii, mesh volume, and material density.