Science & Technology | The Canadian Encyclopedia

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  • Article

    Harry Cecil Rowsell

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

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Harry Cecil Rowsell
  • 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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Harry Gunning
  • 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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Harry Lambert Welsh
  • 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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Helen Griffith Wylie Watson
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    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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Helen Irene Battle
  • Article

    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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    https://d3d0lqu00lnqvz.cloudfront.net/media/new_article_images/HelenMussallem/Mussallem_Marsden_WW2.jpg Helen Mussallem
  • 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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    https://d3d0lqu00lnqvz.cloudfront.net/d6f088eb-b5a2-48d4-b2bc-f6c20411050d.jpg Helen Sawyer Hogg
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    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
  • Article

    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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry Benedict Hachey
  • 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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry George Thode
  • 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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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry Holmes Croft
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    Henry Morgentaler

    Henekh (Henry) Morgentaler, CM, abortion advocate, physician (born 19 March 1923 in Lodz, Poland; died 29 May 2013 in Toronto, ON. Morgentaler spent much of his life advocating for women’s reproductive rights at a time when they could not legally obtain abortions. He established illegal abortion clinics across Canada, challenging the federal and provincial governments to repeal their abortion laws. As a result of his campaign (and the work of organizations such as the Canadian Abortion Rights Action League, CARAL), the Supreme Court struck down federal abortion law as unconstitutional in 1988, thereby decriminalizing the procedure. Morgentaler was also the first to use the vacuum aspiration method in Canada, a safer procedure for women than previous methods.

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    https://d3d0lqu00lnqvz.cloudfront.net/media/media/ffed93ed-6e85-442c-8316-619f423fa8cd.jpg Henry Morgentaler
  • Article

    Henry Taube

    Henry Taube, chemist, Nobel laureate (born 30 November 1915 in Neudorf, SK; died 16 November 2005).

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry Taube
  • Article

    Henry Wolsey Bayfield

    Henry Wolsey Bayfield, naval officer, hydrographic surveyor (b at Hull, Eng 21 Jan 1795; d at Charlottetown 10 Feb 1885). At age 11, Bayfield joined the Royal Navy. In 1816 he was engaged by Captain W.F. Owen to assist in surveying Lake Ontario.

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry Wolsey Bayfield
  • Article

    Henry Youle Hind

    Henry Youle Hind, geologist, naturalist (b at Nottingham, Eng 1 June 1823; d at Windsor, NS 8 Aug 1908). Hind was educated at the Nottingham Free Grammar School, a Leipzig commercial college, and Caius College, Cambridge, but graduated from neither of the latter.

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Henry Youle Hind