mechanics, not with local realism." Quarks Dalitz was directly involved in pioneering quark research since the early 1960s, at a time when leading theorists considered quarks as purely mathematical entities, and he participated in the identification of the top quark. In 1965 he began a series of lectures on the physics of quarks that became a "bible for the relatively few who then took it seriously." Publications During his lifetime, Dalitz produced numerous publications. One article lists 221 papers, and a total of 26 authored book reviews, public lectures and obituaries, and edited books. Amongst his book reviews was a critical review of Andrew Pickering's book Constructing Quarks, in which he takes to task Pickering's implication that experimenters are essentially subservient to theoreticians, saying "In reality, experimenters are cussed individuals, eager to prove the theoreticians wrong whenever possible". His research collaborators included Hans Bethe, Frank Close, F. J. Duarte, Freeman Dyson, Nicholas Kemmer, Rudolf Peierls, Christopher Llewellyn Smith and John Clive Ward. Awards and honours Dalitz was elected a Fellow of the Royal Society (FRS) in 1960 and he received the Hughes Medal in 1975 "for his distinguished contributions to the theory of the basic particles of matter." He was also awarded the Maxwell Medal and Prize and the Royal Medal. Dalitz was awarded the 1980 J. Robert Oppenheimer Memorial Prize. References 1925 births 2006 deaths Australian physicists Quantum physicists Particle physicists Theoretical physicists Royal Medal winners Fellows of the Royal Society Maxwell Medal and Prize recipients Academics of the University of Bristol Academics of the University of Birmingham Academics of the University of Oxford Alumni of the University of Cambridge University of Melbourne alumni Australian people of German descent Foreign associates of the National Academy of Sciences Fellows of the American Physical Society