Calendar: 1973-1974 Page 433

lx Annual Report of the Delegacy Stanford University California concerned with non-linear acoustics Dr Deeley's work on precision speed measurement of strip steel in the rolling mill environment is being extended to achieve high accuracy in more exacting situations and an investigation into speed measure- ment of non-magnetic materials has been commenced The project has been supported throughout by grant from the British Steel Corpora- tion The first stage of Dr Deeley's work supported by the Science Research Council on television picture restoration using digital techniques has been successfully completed and further work in collaboration with Professor Turner is now planned for the more extensive restoration of degraded images Dr Lindsay's work on electron velocity distribution in the presence of magnetic fields continued and with the help of his students he has developed new computer programmes covering the difficult area of relatively low magnetic fields and cylindrical geometries His work on the new formulation of noise in collision-free systems promises to find application in highly non-linear situations and systems comprising both electric and magnetic fields Recently he initiated investigations into the non-linear behaviour of laser cavities and the resultant mode locking During the session Dr Lindsay also completed his investigations of the non-linear treatment of cyclotron resonance interaction using novel method of approach and prepared the results for publication During the summer Dr Lindsay also prepared the manuscript of textbook entitled Introduction to Quantum Electronics Dr Burtt continued his research in the area of low energy bombard- ment of clean metallic surfaces in ultra high vacuum and potential and kinetic electron ejection results of which will be published shortly Mr Boff continued his research on the effects of thermal and flicker noise on the spectral output of electronic oscillators Dr Adby shortly after joining the department began research programme in the area of computer-aided design CAD with particular emphasis on optimisation techniques He has organised new' courses on CAD and has assumed responsibility for the department's com- puter activities particularly in relation to the exchange of programmes with other London colleges Dr Adby was co-author of book on optimisation techniques which was completed during the session Members of the teaching staff were again called upon to serve pro- fessional institutions and other scientific organisations Professor Turner served on the Advisory Committee for Electrical Engineering at the Polytechnic of the South Bank and accepted the post of Student