Table of contents

Discusses nondestructive testing of LSI circuits by means of electron beam probes. The principles of voltage contrast pattern measurements, stroboscope techniques, quantitative voltage measurement and measurement of voltage against time are outlined and the design of a complete electron-beam test system is illustrated. The applications of electron beam testing to failure analysis when electrical measurements have shown an IC to be defective, and to function testing when circuit elements of a newly developed IC have to be checked are described

Describes the development of the Malvern Correlator, an electronic instrument which uses photon correlation in conjunction with laser scattering spectroscopy to measure the movement of particles or molecules. This development illustrates an exceptional case of defence-oriented work leading to widespread civil applications

The operation of helium-cooled HTR is compared with its gas-cooled predecessors and with light- and heavy-water cooled and moderated systems. It is suggested that tha HTR has a versatility and development potential not possessed by other reactor systems, arising from the possibilities of using gas turbines or very efficient dual cycles in power generation and in its application as a direct heat source for industrial processes. It is particularly well adapted to the use of Th/U fuel cycle with its very favourable utilisation of uranium resources. Other features include simpler primary circuit layout in comparison with AGR; favourable inherent safety features with low vulnerability to loss of the coolant; high thermodynamic efficiency; and construction costs comparable to those of LWRs

Deals with the core topic in ergonomics, the interaction of a human with a machine, with emphasis on psychological, and to some extent physiological, issues in the linkage of man to machine. This topic is divided into a discussion of displays and controls. In particular, the design of computer displays and of air traffic controls are dealt with

Reviews the techniques that have been used to make aspherical components from the earliest attempts through to modern computer-aided control. The reasons why optical designers demand aspherics and why aspherics are more expensive than spherical optics are discussed. The possibility of using aspherics in the fields of instrument optics and photographic lenses for the amateur is examined

Report on Image restoration and enhancement, Institution of Electrical Engineers, 19 December 1978 at the IEE, Savoy Place.

Report on Newer optical materials, Materials Science Club, 28 March 1979 at the London College of Printing.

Report on Physics and technology in the fibres industry, Institute of Physics, Yorkshire Branch, 22 March 1979 at ICI Fibres, Harrogate, Yorkshire.