Person Nye; John Frederick (1923 - 2019) Nye John Frederick 1923 - 2019 British Male Hove, Sussex, England 26/02/1923 19230226 08/01/2019 20190108

Physicist Glaciology Son of Haydn Percival Nye and Jessie Mary Nye (nee Hague); brother of Peter Hague Nye (FRS 1987) John Nye’s notable early contributions to crystal plasticity included (with Lawrence Bragg) the bubble-raft model and a study of geometrical relations in dislocated crystals that laid the foundations of continuous distributions of dislocations. His book on tensor properties of crystals is a standard work. In glaciology, he formulated the tensor-invariant generalisation of Glen’s nonlinear flow law for ice that forms the basis for modern glacier mechanics and explained, from his own field work, the origin of waves below ice falls. He also revealed how veins of water at three-grain junctions in temperate polycrystalline ice control its thermal behaviour. John’s laboratory-sized model of the echo sounding of the Antarctic ice sheet used ultrasonic waves in place of much longer radio waves. With it, he discovered that monochromatic waves, quite generally, contain dislocations like those in crystals — thereby establishing (with Michael Berry) singular optics as a thriving new branch of optics. In particular, he revealed the fine-scale linear patterns of optical vortices that underlie the diffraction fields of the first five of Thom’s ‘elementary catastrophes’. Professor John Nye FRS died on 8 January 2019. Fellow 18/03/1976 53 Sources: Biographical Memoirs of the Royal Society, Vol 57, 2011, pp 315- 326 https://en.wikipedia.org/wiki/John_Nye_(scientist) 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 26 Feb 1923 - 14 Jan 2019 NA4040 21/11/2001 Andyg Pmab 28/03/2023 RS_NET\JonathanB yes http://viaf.org/viaf/7467603 5ec6045e-1094-46cc-855c-c3158e41a02e