There is no respect for mere age in Science or Technology. Yet the cen tenary of the discovery, by the third Lord Rayleigh, that elastic waves can be guided by a surface, is memorable for the contradictions which it encompasses: Rayleigh's assessment of his classic 1885 paper as a rather minor mathematical development with a potential value only in seismology on the one hand; on the other the rediscovery of the subject in a totally that of electronic signal processing - which has led to its different fiel- explosive growth over the last twenty years. The new surface acoustic wave (SAW) devices have proved to be per electronic components. Today almost all television receivers con vasive tain one or more SAW filters, sophisticated radars depend on SAW signal processing, and SAW devices have been incorporated in ultra-high perfor mance opto-electronic systems. With the objective of surveying these developments and attempting to predict those that can be foreseen, as well as marking the centenary of Lord Rayleigh's discovery, The Rank Prize Funds' Committee for Opto Electronics organised a symposium in London, in July 1985. It was held in the Royal Institution, London, where Rayleigh himself once worked and often lectured. The present volume is the tangible outcome of the symposium, In which international experts survey.ed their various fields, and presented the most exciting recent developments."

Unhealthy interservice rivalry due to poor ethical conduct on the part of individuals and the general military bureaucratic system has long been, and continues to be, problematic for harmonious joint military activity. This paper argues a common code of military virtues would help promote healthy interservice competition and retard unhealthy rivalry by improving the ethical focus of jointness. The study begins with analysis of interservice rivalry, assessing causes and situational variables. Rivalry is traditional and exists due to competing paradigms based on functional differences and competition for resources. It is personal, and it is institutional. Interservice competition itself is not a bad thing-for it can produce initiative, efficiency, and esprit de corps. If manifested in lying or other breaches of integrity, however, interservice rivalry becomes unhealthy to working relations between the military services. This was the situation in the historical case study of the "Revolt of the Admirals" in 1949. After showing unhealthy interservice rivalry at work in this case, this study analyzes ethics, integrity, values, and virtues to argue virtues are fundamental to healthy jointness. Presently the Air Force, Army, Navy and Marines have different "core values" to help members focus on professional performance. Yet, all members of the same profession of arms, regardless of service component, should have a common virtuous bond-which different core values may not effectively promote. A better system would be to use the West Point motto, "Duty, Honor, Country," or a DoD code of virtues, since virtues correspond more appropriately than values to morality and ethics. Suggested in the paper is a code of cardinal virtues, based on the four ancient cardinal virtues-prudence (or wisdom), fortitude (courage), temperance (selflessness), and justice (truthfulness). If leadership implements it properly through a continuing educational program, a code of virtues could help cure