At the beginning of post 23.4, I described two routes to understanding x-ray crystallography. If you prefer the second, less mathematical, route – ignore this post! Before you read this, I suggest you read post 23.8. In post 22.14, we saw that the x-ray diffraction pattern of an object is given by the Fourier transform… Continue reading 23.10 Frequency analysis and x-ray crystallography

Before you read this, I suggest you read post 23.8. Let’s think about a wave or signal that looks like the picture above. It might be the result of an observation – for example, the electrical signal that results from recording a sound using a microphone. In this example we might want to know the… Continue reading 23.9 Discrete Fourier Transform