For his seminal contributions to the observation of the fundamental quantum- mechanical nature of spins through the effects of rotation and the gravitational field, using neutron interferometry, including the observation of the Aharonov- Casher effect, for his extensive work with neutron scattering on the magnetic properties of transition metals and their alloys, for his critical

For leadership in the development, application and establishment of neutron reflectometry as an essential measurement tool for nanoscale materials

In recognition of his deep and lasting experimental and theoretical contributions to the areas of Quantum Liquids and Solids, Superconductivity, Magnetism, Soft Condensed Matter, Confined and Adsorbed Liquids, Surfaces, and Neutron Scattering Techniques, together with his selfless service to the neutron scattering field as a whole