Maurice Wilkes (right) with the Meccano differential analyser in the Cambridge University Mathematics Laboratory, c. 1937. A. F. Devonshire (left) co-authored a number of papers on melting and disorder with the Laboratory's first director, John Lennard-Jones. The winner of the 1937 Mayhew Prize, J. Corner, is operating the input table (centre).
John Ashworth Ratcliffe CB CBE FRS was an influential British radio physicist.
John Ashworth Ratcliffe, FRS © National Portrait Gallery, London