John Cunningham McLennan

Sir John Cunningham McLennan, KBE FRS FRSC[1] (October 14, 1867 October 9, 1935) was a Canadian physicist.


John Cunningham McLennan

London 1934
Born(1867-10-14)October 14, 1867
DiedOctober 9, 1935(1935-10-09) (aged 67)
Alma materUniversity of Toronto
AwardsFlavelle Medal (1926)
Royal Medal (1927)
Scientific career
FieldsPhysics
Doctoral studentsJohn F. Allen

Born in Ingersoll, Ontario, the son of David McLennan and Barbara Cunningham, he was the director of the physics laboratory at the University of Toronto from 1906 until 1932.

McLennan was elected a Fellow of the Royal Society in 1915.[2] McLennan delivered the Guthrie lecture to the Physical Society in 1918. With his graduate student, Gordon Merritt Shrum, he built a helium liquefier at the University of Toronto. They were the second in the world to successfully produce liquid helium in 1923, 15 years after Heike Kammerlingh Onnes.[3] In 1926, he was awarded the Royal Society of Canada's Flavelle Medal and in 1927 a Royal Medal.

He died in 1935 near Abbeville in France on a train from Paris to London[2] of a heart attack. He is buried beside his wife in Stow of Wedale, Scotland.[4]

References

  1. Eve, A. S. (1935). "Sir John Cunningham McLennan. 1867-1935". Obituary Notices of Fellows of the Royal Society. 1 (4): 577. doi:10.1098/rsbm.1935.0022. JSTOR 768989.
  2. "Directory of Fellows of the Royal Society". Retrieved 24 August 2019.
  3. Radebaugh, R. (2007). "Historical Summary of Cryogenic Activity Prior to 1950". In Timmerhaus, K. D.; Reed, R.P. (eds.). Cryogenic Engineering - Fifty Years of Progress. New York: Springer. ISBN 978-0-387-46896-9.
  4. "Biography McLENNAN, Sir JOHN CUNNINGHAM". Retrieved 24 August 2019.

Further reading

Professional and academic associations
Preceded by
Thomas Chapais
President of the Royal Society of Canada
1924–1925
Succeeded by
William Parks


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