Anslow was born in Springfield, Massachusetts to John Anslow and Ella Iola Leonard.[2] Anslow attended Springfield Central High School and entered Smith College in 1909. While studying at Smith College, Anslow was a member of the Mathematical Society and served as vice president of the Physics Club.[3] In her second year, Anslow elected a focus on physics under Frank Allan Waterman. Following her graduation with an A.B. in 1914,[3] Anslow was appointed as a Department of Physics demonstrator[3] (1914–1915) and then an assistant in physics (1915–1917). In 1916 she began her graduate studies in advanced physics under Smith professor Janet T. Howell, taking Howell's course in spectroscopy. Howell introduced Anslow to the new Rowland grating spectrograph acquired by Smith College to research the emission spectra of radium, resulting in Anslow's thesis "Spectroscopic Evidence for the Electron Theory of Matter". Anslow graduated in 1917 with her A.M.[4] Following her graduation, she was appointed instructor in physics at Smith College to replace Howell.[1][5]
Anslow obtained a Ph.D. from Yale University in 1924[6][3] and upon graduation returned to Smith as an associate professor, attaining the role of full professor in 1930. In 1940, Anslow became director of graduate study, followed by professor on the Gates Foundation in 1946, and professor emeritus in 1960. During her tenure at Smith, Anslow frequently contributed to scientific journals and was a member of both the American Academy of for the Advancement of Science and the American Physical Society, where she was the president of the New England Section.
^ abFleck, George (1993). "Gladys Amelia Anslow". In Grinstein, Louise S.; Rose, Rose K.; Rafailovich, Miriam H. (eds.). Women in Chemistry and Physics: A Biobibliographic Sourcebook. Greenwood Press. pp. 9–17.