Before you read this, I suggest you read posts 22.22 and 22.23. In post 22.22, we saw that a one-dimensional lattice was a line of points, each separated by the vector a. The picture above shows how a two-dimensional lattice can be generated by convolution of two one-dimensional lattices. A three-dimensional lattice can be generated… Continue reading 22.24 Reciprocal lattice

I mentioned the idea of K-space in post 22.22 and introduced the vector K in post 19.20; in post 22.12 I described the Fourier transform as a function of K. The purpose of this post is to bring all these ideas together. In the left-hand picture above, a ray is scattered by a particle at… Continue reading 22.23 K-space