26:57

Diffraction Lecture 25: Rietveld Refinements

26:11

Diffraction Lecture 17: Indexing Diffraction Patterns of Cubic Crystals

21:39

Diffraction Lecture 1: Translational Symmetry in Two Dimensions

24:14

Diffraction Lecture 21: Peak Intensities

24:50

Diffraction Lecture 6: 2D Plane Group Symmetry