In June 1930 the Department of Scientific and Industrial Research of the British Government awarded a modest research grant to J. E. Lennard-Jones, Professor of Theoretical Physics at the University of Bristol, in response to a proposal submitted under the title of ‘A theoretical investigation of the physical properties of the solid state of matter’. This initiative marked the first notable recognition by public funding bodies in Great Britain of the potential contribution to be made by the new theoretical ideas (...) in physics to a deeper understanding of the properties of industrially important materials, particularly metals and their alloys. The possible technological relevance of such a study was, indeed, a central factor in the decision to support it. The research arising out of this initial award provided the impetus for the first stage of Bristol theoretical research on the solid state of matter, an enterprise initially associated with the name of Lennard-Jones, and later with Nevili Mott who succeeded him as Professor of Theoretical Physics in 1933. (shrink)