Calendar: 1969-1970 Page 449

Annual Report of the Delegacy lxxxvii fast analogue-digital converter with magnetic memory and read-out facilities The group co-operates on an international exchange of data relating to Schumann Resonance The nuclear physics group led by Dr Burge whose departure to Chair will be great loss and Dr Smith completed measure- ments on the elastic and inelastic scattering of 30- and 50-MeV protons by 14N 40Ar 6365 Cu and 64166 68Zn Due to the imminent shut-down of the work on Mo Sm Pb and Bi was brought to completion new contract for work on the variable Energy Cyclotron at Harwell was negotiated and projects involving the scattering of 14-MeV neutrons by separated isotypes are being formulated Theo- retical studies included new type of optical-model analysis Dr Giles brought his atomic beam equipment for studying collision cross-sections of alkali metal atoms into operation Dr Stokes continues his theoretical studies of the optical properties of inhomogcneous materials particularly the light scattering of spheres Mr Curling collaborated with the Electrical Engineering depart- ment and made further progress on the automatic focusing of electron microscopes Conferences visits lectures etc Professor Price gave invited lectures at conferences of the Institute of Physics the Institute of Petroleum the Infra-Red Discussion Group and the University of Sheffield Professor Champion spent three months at the University of Malaysia where he was Visiting Professor of the Royal Society he lectured at the Univer- sity of Singapore and the University of Malaysia where he initiated research projects in solid-state physics Professor Domb was away on year's leave of absence at the Belfer Graduate School of Science Yeshiva New York he lectured at twenty universities in the United States during the year and gave an invited course of lectures at the Banff Summer School on critical phenomena He also gave papers at conferences in Boston Chicago and La Jolla Dr Burgc and his group presented papers at the international Nuclear Physics Conference in Tokyo and at the Institute of Physics Conferences at Manchester and Harwell Dr Wilkinson gave invited papers at the European Molecular Spectroscopy Conference Madrid the International Materials Science Conference Washington DC the Ohio State Spectroscopy Con- ference the Institute of Physics meeting and the Institute of Petroleum Conference He also lectured at the Universities of Michi- gan Carolina Minnesota Bristol Sussex Bangor and London Dr