Calendar: 1970-1971 Page 434

Annual Report of the Delegacy lix with the aid of which quantitative experimental observations can be made Further to facilitate the exchange of views between staff and students the department-acting in concert with the departments of Civil and Mechanical Engineering-established Staff-Student Committee comprising three members of staff and three students The student members were drawn one from each year of the undergraduate course Constructive suggestions emerged from the early meetings of this committee Continued industrial support for much of the department's research was noteworthy Dr Ε Deeley's work on improved aperture-cor- rection techniques for television signals directed towards improving the quality of the picture before transmission received Science Research Council support and grant of £2 000 was made towards the cost of equipment this work is being carried on in consultation with the Research Department of the British Broadcasting Corporation by-product of the work sponsored by the British Iron Steel Research Association on magnetic measurements related to the steel industry was suggestion by Dr Deeley for novel method of measur- ing accurately the speed of moving steel strip Initial experiments gave promise of potentially important development Dr Lindsay continued research on electron velocity distributions in relation to fluctuations in crossed electric and magnetic fields and in particular to the problem of noise at microwave frequencies These investigations comprised electron-ion density fluctuations in plasma immersed in magnetic field together with the quantum mechanical formulation of certain electron beam-electro-magnetic field inter- action problems encountered in microwave engineering Dr Lindsay was invited jointly by the Department of Electrical Engineering Massachusetts Institute of Technology and the Research Division of the Raytheon Company to spend the summer vacation in the Electrical Engineering department Massachusetts Institute of Tech- nology working on the problems of classical and quantum-electro- magnetic formulation of cyclotron resonance interaction between electron beams and electro-magnetic fields Observations made under the direction of Dr Burtt of ion-induced electron ejection from gas-covered tungsten single crystal continue and were reported in publication They were supplemented by project to bombard sample of clean silicon by low-energy gold ions