Lecture 1:  Images of 2D bravais lattices (from wikipedia: http://en.wikipedia.org/wiki/Bravais_lattice#mediaviewer/File:2d-bravais.svg)

Symmetry groups (http://en.wikipedia.org/wiki/Lattice_%28group%29):

Website for viewing 3D cubic crystal structure:

http://www.ibiblio.org/e-notes/Cryst/Cryst.htm

Website for additional crystal structures:

http://www.le.ac.uk/eg/spg3/atomic.html

Unit cells of fcc and hcp:

http://www.materials.ac.uk/elearning/matter/Crystallography/CrystalStructures/unit-cells-of-hcp-and-fcc.html

Reading for last day of class: Part I & Part II (4/28).  Please read and come to class prepared for a discussion or quiz.