Varley Fullerton Sears (born 1937, died at age 81 in Deep River, Ontario on June 9, 2019[1]) was a Canadian physicist, notable for his contributions to the methodological foundations of neutron scattering.
In 1960, Sears obtained a Ph.D. from the University of Toronto with a thesis on The rotational absorption spectrum of solid and liquid parahydrogen.
[2] From 1963 to 1965, the National Research Council of Canada sent him as an Overseas Postdoctoral Fellow to the Clarendon Laboratory in Oxford where he was hosted by Roger James Elliott and worked on Raman scattering by semiconductors.
[3] Back in Canada, he became a staff scientist in the Theoretical Physics Branch of Chalk River Laboratories.
[7][8][9] In 1997, he published a generic solution of the Darwin-Hamilton equations that provide an approximative description of multiple Bragg reflection by a mosaic crystal.