Professor Sir Samuel Frederick Edwards, M.A., Ph.D., (Hon) Sc.D., FRS, John Humphrey Plummer Professor of Physics (1972–1984), Cavendish Professor of Physics (1984–1995), Fellow of Gonville and Caius College (1972–2015), President of Gonville and Caius College (1992–1997), Life Fellow of Gonville and Caius College (1992–2015), Pro-Vice-Chancellor (1992–1995), died on 7 May 2015 aged 87 years.