John Joly Quotes


Geological age plays the same part in our views of the duration of the universe as the Earth's orbital radius does in our views of the immensity of space.


Citations

Joly, John. "An Estimate of the Geological Age of the Earth." Scientific Transactions of the Royal Dublin Society, vol. 7, ser. 2, 1899, p. 23.

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  • Born: November 1, 1857
  • Died: December 8, 1933
  • Nationality: Irish
  • Profession: Scientist

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