Demonstrated that radioactivity is not destroyed by either by
heat or by ionization due to chemical reactions.
Showed that radioactive materials behave qualitatively
and quantitatively differently from phosphorescent
"Effect of Heat on Excited Radioactivity," Physical Review, Series 1,
"On the Nature of Certain Radiations from Sulphate of Quinine,"
Physical Review, Series 1, 18:135(1904).
Fellow, American Physical Society
Fellow, Mathematical Society
Fellow in Mathematics, Bryn Mawr College 1896-97
European Fellowship, Association of Collegiate Alumnae, for study at Goettingen and at the Polytechnik Institut in Zurich.
1897-11 Head, Physics Department, Goucher College.
1902-03 Research student in McDonald Laboratory, McGill
University (graduate study with Rutherford while on leave
from Goucher College).
1904-06 Research student, Cavendish Laboratory in Cambridge University (on leave from Goucher College).
1911-13 Researcher(?), School of Education,
University of Chicago (studied psychology and eugenics).
1913-16 Professor of Physics and Dean of Women, Grinnell College.
1914-16 Professor of Mental and Physical Hygiene, Grinnell College.
1916-18 Associate Professor of Physics and Dean of Women,
University of Illinois.
1918-22 General Secretary, YMCA, New York.
1920-21; 1923-28 Special Teacher, Physics, Lincoln and
Brealey Schools, New York.
1922-23 Head Mistress, Phoebe Ann Thorne School, Bryn
1928-31 Physics teacher, Roycemore School, Evanston, IL.
B.S. Northwestern University 1894
M.S. Northwestern University 1895
Ph.D. University of Pennsylvania 1909
[1 CLH], [35 MRC], [42 MRC], [Loretta Johnson's Web Page, URL??]
See also The Grinnell Review October 1913, Grinnell College Bulletin 1913-16, and American Men of Science 1921 and 1927.