Science & Technology | The Canadian Encyclopedia

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  • Article

    Harold Elford Johns

    His work was at all times characterized by the application of imagination and experimental skill backed by theoretical rigour to the solution of major problems, largely related to cancer diagnosis and treatment.

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    https://d3d0lqu00lnqvz.cloudfront.net/media/media/8628eac9-0aa9-4233-a6c9-75a438514b72.jpg Harold Elford Johns

  • Article

    Harold Joseph Bernstein

    Harold Joseph Bernstein, physical chemist (b at Toronto 26 Aug 1914; d at Florida 14 Dec 1984). After graduating with a PhD from the University of Toronto in 1938, he moved to the University of Copenhagen on a scholarship.

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  • Article

    Harold Scott MacDonald Coxeter

    Harold Scott MacDonald Coxeter, "Donald," mathematician (b at London, Eng 9 Feb 1907; d at Toronto, 31March 2003). Coxeter received his BA (1929) and PhD (1931) at Cambridge. He was a research fellow there from 1931 to 1935, spending 2 years as research visitor at Princeton.

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  • Article

    Harry Botterell

    Edmund Harry Botterell, neurosurgeon, medical educator (b at Vancouver 28 Feb 1906; d at Kingston 23 Jun 1997). Graduation in medicine from the University of Manitoba was followed by neurosurgical training at University of Toronto and research at Yale.

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Harry Botterell

  • Article

    Harry Cecil Rowsell

    Harry Cecil Rowsell, veterinarian, animal care specialist (b at Toronto 29 May 1921).

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  • Article

    Harry Gunning

    Harry Emmet Gunning, OC, scientist, administrator (born 16 December 1916 in Toronto, ON; died 24 November 2002 in Edmonton, AB).

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  • Article

    Harry Lambert Welsh

    Harry Lambert Welsh, physicist, educator (b at Aurora, Ont 23 Mar 1910; d at Toronto 23 July 1984). He was educated and spent his career at U of T, except for 1931-33 in Göttingen and 1943-45 in Ottawa as lieutenant-commander of naval operational research.

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  • Article

    Helen Griffith Wylie Watson

    Helen Griffith Wylie Watson, née McArthur, nursing administrator (b at Stettler, Alta 11 July 1911; d at Guelph, Ont 15 Dec 1974). A graduate of U of A, Watson received her first practical experience as a public-health nurse at an isolated settlement in the Peace River country during the Depression.

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  • Article

    Helen Irene Battle

    Helen Irene Battle, zoologist, educator (b at London, Ont 31 Aug 1903; d there 17 Jun 1994). A pioneering Canadian zoologist and much-loved teacher, she was emeritus professor of zoology at the University of Western Ontario from 1972.

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    Helen Mussallem

    Helen Kathleen Mussallem, CC, nursing educator, reformer and administrator (born 7 January 1915 in Prince Rupert, BC; died 9 November 2012 in Ottawa, ON). Mussallem started her career as a nurse at Vancouver General Hospital and was deployed overseas during the Second World War. She was instrumental in reforming nursing education in Canada and around the world. In her 18 years as the executive director of the Canadian Nurses Association, she helped transform nursing into a profession and promoted its role within Canada’s health care system.

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  • Article

    Helen Sawyer Hogg

    Helen Battles Sawyer Hogg (née Sawyer), CC, astronomer and educator (born 1 August 1905 in Lowell, Massachusetts; died 28 January 1993 in Toronto, ON). Recognized internationally for her research on globular star clusters, Helen Sawyer Hogg significantly advanced astronomers’ understanding of the location and age of stars as well as the origins and evolution of our galaxy, the Milky Way. She also contributed greatly to the Canadian public’s understanding of astronomy and inspired women to enter scientific professions.

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  • Article

    Henri J. Breault

    Henri Joseph Breault, medical doctor, anti-poisoning advocate (born 4 March 1909 in Tecumseh, ON; died 5 September 1983 in Exeter, ON). Breault is known for spearheading a national campaign to prevent accidental childhood poisonings. He advocated for the development of the Palm-N-Turn, a safety cap that drastically reduced child deaths due to poisoning in Canada and around the world.

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    https://d3d0lqu00lnqvz.cloudfront.net/HenriJBreault/hbreaultcmhf-1.jpg Henri J. Breault

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    Henry Benedict Hachey

    Henry Benedict Hachey, oceanographer (b at West Bathurst, NB 7 June 1901; d at St Andrews, NB 24 June 1985).

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  • Article

    Henry George Thode

    Henry George Thode, scientist, university administrator (b at Dundurn, Sask 10 Sept 1910; d 22 Mar 1997). He graduated from the University of Saskatchewan, earned his doctorate from Chicago in 1934 and worked in the labs of Nobel winner Harold Urey at Columbia before joining McMaster in 1939.

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  • Article

    Henry Holmes Croft

    Henry Holmes Croft, educator, scientist (b at London, Eng 6 Mar 1820; d near San Diego, Tex 1 Mar 1883). For 37 years Croft was professor of chemistry (the first) at the University of Toronto and its antecedent, King's College.

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