Person Weiss; Nigel Oscar (1936 - 2020) Weiss Nigel Oscar 1936 - 2020 British Male Johannesburg, South Africa, Africa 16/12/1936 19361216 24/06/2020 20200624

Astronomer Mathematics Astrophysics Fluid dynamics Solar magnetic fields Flux expulsion Education: Hilton College, Natal; Rugby School (1953-1954); Clare College, University of Cambridge, MA; PhD with a thesis on Variable Hydromagnetic Motions (1961) Memberships: FRAS (President 2000-2002) Medals/Awards: Gold medal of the Royal Astronomical Society 2007 Nigel Weiss was renowned for his work in the theory of convection, for developing appropriate numerical techniques, and for pioneering their use in precise numerical experiments in order to gain a qualitative and comprehensive understanding of the behaviour of complicated nonlinear systems. Among many notable achievements in this field, he was instrumental in the identification of a period-doubling route to chaos in a system of partial differential equations describing doubly-diffusive convection. He made wide-ranging studies of the magnetoconvective 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 the magnetic field into ropes from which fluid motion is excluded. Later, he initiated a programme of research in the field of nonlinear compressible convection, an important step towards realistic modelling of stellar convection zones. Professor Nigel Weiss FRS died on 24 June 2020. Fellow 12/03/1992 55 Sources: https://royalsociety.org/people/nigel-weiss-12505/; https://en.wikipedia.org/wiki/Nigel_Weiss (accessed 26 June 2020) References: http://www.damtp.cam.ac.uk/user/now/ International Standard Archival Authority Record for Corporate Bodies, Persons and Families - ISAAR(CPF) - Ottawa 1996 ISBN 0-9696035-3-3 National Council on Archives, Rules for the Construction of Personal, Place and Corporate Names, 1997 16 Dec 1936 - 24 Jun 2020 NA4531 21/11/2001 Andyg Martind 28/03/2023 RS_NET\JonathanB Yes http://viaf.org/viaf/9940385 db25ef50-84c7-4fc7-a7f2-a31936ae257a