John Joly

John Joly FRS (1 November 1857 – 8 December 1933) was an Irish physicist and professor of geology at the University of Dublin, known for his development of radiotherapy in the treatment of cancer. He is also known for developing techniques to more accurately estimate the age of a geological period, based on radioactive elements present in minerals, the uranium–thorium dating.

John Joly
John Joly
Born(1857-11-01)1 November 1857
Millgrove, Bracknagh, County Offaly, Ireland
Died8 December 1933(1933-12-08) (aged 76)
Dublin, Ireland
NationalityIrish
Known forradiotherapy
cohesion-tension theory
AwardsBoyle Medal of the Royal Dublin Society (1911)
Royal Medal of the Royal Society of London (1910)
Murchison Medal of the Geological Society of London (1923)
Scientific career
Fields
  • Geology
  • Medicine
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