By Glyn Parry Review: Scholar, courtier, magician: the lost library of John Dee (Royal College of Physicians, 18 January-29 July 2016) By Claudio Giorgione The birth of a collection in Milan: from the Leonardo Exhibition of 1939 to the opening of the National Museum of Science and Technology in 1953 By Jim Bennett The Science Museum and the Leonardo da Vinci Quincentenary Exhibition of 1952 By James Sumner Review: The thrilling adventures of Lovelace and Babbage: the (mostly) true story of the first computer, by Sydney Padua By Sally Shuttleworth Old weather: citizen scientists in the 19th and 21st centuries By Jim Bennett James Short and John Harrison: personal genius and public knowledge By Alison Boyle and Harry Cliff Curating the collider: using place to engage museum visitors with particle physics By Caitlin Doherty ‘½ vol. not relevant’: The scrapbook of Winifred Penn-Gaskell By Boris Jardine Made real: artifice and accuracy in nineteenth-century scientific illustration By Simon Schaffer Chronometers, charts, charisma: on histories of longitude