Description: (Irish Physicist Known for His Development of Radiotherapy in the Treatment of Cancer)
John Joly was a distinguished Irish geologist and physicist known for his significant contributions to the fields of radiotherapy and geology. He was a pioneer in utilizing radiotherapy for cancer treatment, which led to advancements in medical practices. Joly also introduced innovative methods for determining the age of geological periods by examining radioactive elements in minerals, such as uranium–thorium dating techniques. His groundbreaking work in these areas transformed both medical and geological sciences, leaving a lasting influence on research and practical applications in these disciplines.