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There can be little doubt that 1973 will remain notable as a year in which knowledge of Galileo's mechanics increased dramatically. Professor Stillman Drake's publication, in May, of some of… (More)
The Explosives and Engineering Group at Defence Research Establishment Suffield (DRES) has developed a portable field laboratory containing an ultra-high speed camera (Cordin Model 330A) for the… (More)
The paper commences with a comparison of thin film and diffused passive components, then describes the methods of fabricating resistors and capacitors by using sputtered tantalum and also inductors… (More)
A microcircuit interconnection system has been developed which utilizes the advantages of a met,sl substrate for heat conduction and power distribution combined with a superimposed logic… (More)
Development of semiconductor digital circuits has now reached the point where devices operating with propagation delays in the subnanosecond region are being made. With the advent of complete… (More)
Galileo at Work: His Scientific Biography.By Stillman Drake. Pp. 560. (University of Chicago Press: Chicago and London, 1979.) $31.25; £17.50.