Clark's first professional break came about working with computer technology at General Motors where she worked for nine years. Clark later was offered a faculty position in the Physics faculty at Ohio State University in 1981, where she become a professor in 1986. Her research was within nuclear
theoretical physics. At the 2001 Commencement Address for Ohio State, she spoke candidly about her experience as a woman in physics. Clark was a fierce advocate for women in physics. She helped create the
American Physical Society Committee on Status of Women in Physics. Clark quit accepting graduate students after an incident in 1994, in which a female graduate student was dismissed despite receiving higher scores than some of the male students that were retained. Clark was well known for her generosity. She worked tirelessly to help young faculty members and graduate students secure funding. ==Publications==