Ellen Gleditsch
Ellen Gleditsch ( born December 29, 1879 in Mandal, Norway, † June 5, 1968 in Oslo) was a Norwegian chemist.
Ellen Gleditsch 1897 completed an apprenticeship as a pharmacist. Following the pharmacist teaching she studied pharmacology and acquired in 1902 a non- academic title. In 1903 she got a job as assistant of the chemical laboratory of the University of Oslo from 1907 to 1912, she worked as an assistant to Marie Curie at the Institut de Radium the Sorbonne in Paris.
Gleditsch determined the half-life of radium and wrote a thesis in the field of organic chemistry on derivatives of amyl benzenes.