Born in South Africa, Weiss studied at Hilton College, Natal, Rugby School and Clare College, Cambridge, and had been a fellow of Clare College since 1965. He read for his PhD in 1961 with a thesis on Variable Hydromagnetic Motions. [1]
Career
In 1987 he became Professor of Mathematical Astrophysics at the University of Cambridge.
In 1966 he was the first to demonstrate and describe the process of 'flux expulsion' by which a conducting fluid undergoing rotating motion acts to expel the magnetic flux from the region of motion, a process now known to occur in the photosphere of the Sun and other stars.[8]
Awards and honours
Weiss was elected a Fellow of the Royal Society (FRS) in 1992.[2] His nomination reads
Professor Weiss is distinguished for his work in the theory of convection, for developing appropriate numerical techniques, and for pioneering their use in precise numerical experiments to gain a qualitative and comprehensive understanding of the behaviour of complicated nonlinear systems. Among many notable achievements in this field, he has been instrumental in the identification of a period-doubling route to chaos in a system of partial differential equations describing doubly-diffusive convection. He has made wide-ranging studies of the magneto-convective processes occurring in the Sun and similar stars. In early work of lasting influence, he analysed the process of magnetic flux expulsion and the mechanism of concentration of magnetic field into ropes from which fluid motion is excluded. In recent work, he has initiated a program of research in the field of nonlinear compressible convection, an important step towards realistic modelling of stellar convection zones.[9]
