Work in the world of science
LARGE SCALE ELECTRONICS by John Sykes
Present interest in transmitting large quantities of electrical power by using high-voltage direct current-as in the cross-channel power cable-has led to the development of enormous valves basically the same as the valves in a radio, but often weighing five tons each. John Sykes describes the problems involved in making such valves, and the way in which they are used.
Last Thursday's recorded broadcast in Network Three