Small error in X-ray diffraction

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1

In the text, just before the 2D example, it says
“The relation \textbf{a}_i \cdot \textbf{b}_j=2πδ_{ij} means that if we write the lattice vectors as rows of a matrix, the reciprocal lattice vectors are 2\pi times the rows of the inverse of that matrix.”

I’m quite sure this should be that the reciprocal lattice vectors are 2\pi times the \textbf{columns} of the inverse of that matrix.

2

You are correct, I also saw that and fixed.

3

I guess I might as well comment this here:

In Crystal Structure (lecture 9), just before the header of “Wigner-Seitz unit cell”, it says “The basis in fractional coordinates is: C(0, 0),\ C(1/3, 0)…”. This should be “C(0, 0),\ C(0, 1/3)…”

4

indeed, fixed now. Thanks for letting us know.