Following up on #2197, it would be really helpful to include an example notebook that covers the three different types of MHD waves. The notebook should give an understandable introduction to Alfvén, fast magnetosonic, and slow magnetosonic waves. It would be helpful to include the formulae for the dispersion relations, and talk about what is physically happening in each of the waves. Diagrams indicating the nature of each of the waves would be helpful too.

I keep meaning to do this every year, but it would be really helpful to have this in place by the SULI summer course in June 2024.