Person McLennan; Sir; John Cunningham (1867 - 1935); physicist McLennan John Cunningham Sir physicist 1867 - 1935 Canadian Male Ingersoll, Ontario, Canada 14 April 1867 18670414 Near Abbeville, France, on a train from Paris to London returningfrom a meeting of the International Bureau of Weights and Measures. 09/10/1935 19351009 Burial: Stow of Wedale, Scotland.

physicist Spectroscopy Radioactivity Physics Education: Collegiate Institute, Clinton, Ontario, Canada; Stratford model school (1884); University of Toronto BA; Cambridge PhD Career: Director of the physics laboratory at the University of Toronto (1906-1932); constructed a helium liquefier at the University of Toronto, in collaboration with his graduate student Gordon Merritt Shrum (1923). Memberships: Royal Canadian Institute (President 1915–16) Honours: OBE 1917; KBE 1935 Awards/Medals: Flavelle medal 1926 Parents: David McLennan (d. 1897), from Aberdeenshire, miller and grain dealer, and Barbara (d. 1915), daughter of John Cunningham of Stewarton, Ayrshire. Spouse: Elsie Monro Ramsay (d. 1933), daughter and heir of William Ramsay, whisky merchant, of Bowland, Midlothian (1910). Worked on low temperature superconductivity of metals. Proposed the use of helium in airships. Royal Society roles: VP 1933-1934 Medals and prizes: Royal Medal 1927 Lectures: Bakerian 1928 Fellow 06/05/1915 48 John Alexander McClelland William Henry Bragg Charles Glover Barkla John Sealy Edward Townsend Robert John Strutt Charles Thomson Rees Wilson Sources: Bulloch's Roll; DNB; DSB vol 18 pp 586-587 Obituaries: Obituary Notices of Fellows of the Royal Society 1932-1935 vol l pp 577-583, plate, by A S Eve References: R W Home, 'The Royal Society and the Empire: the colonial and Commonwealth Fellowship. Part 2. After 1847' in NR 2003 vol 57 pp 47-84 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 https://royalsocietypublishing.org/doi/10.1098/rsbm.1935.0022 https://royalsocietypublishing.org/action/doSearch?ContribAuthorRaw=McLennan%2C+John+Cunningham RCN R72526 RCN R72506 RCN R72532 RCN R72534 RCN 15270 RCN R72503 RCN R72533 RCN R72505 RCN R72535 14 Apr 1867 - 9 Oct 1935 The past Fellows entries are under continuous revision. If you have queries or additional information to contribute, please contact Library@royalsociety.org. Content in external sources is not controlled by the Royal Society and historical sources may include content that is now unacceptable. Reviewed on 21/08/2024 as part of the Name Authority Project update. NA1169 21/11/2001 Andyg Pmab 17/03/2026 RS_NET\VirginiaM Yes http://viaf.org/viaf/57394419 52bb091a-64a6-447b-9a78-12df8c6c7f0b