My specialism is muon-spin spectroscopy, where we implant short-lived particles called muons into a magnet to act as a miniature compass, telling us about the properties of the magnet. I often supplement this approach with neutron scattering measurements (I have the most experience in diffuse and inelastic neutron scattering), and with computational calculations. I am especially interested in cases where we can use density functional theory, which is a way of understanding quantum mechanics, to model the results of an experiment.