Harriet Brooks, Canadian physicist and academic (died 1933)

Harriet Brooks was the first Canadian female nuclear physicist. She is most famous for her research in radioactivity. She discovered atomic recoil, and transmutation of elements in radioactive decay. Ernest Rutherford, who guided her graduate work, regarded her as comparable to Marie Curie in the calibre of her aptitude. She was among the first persons to discover radon and to try to determine its atomic mass.