Fullsize image: https://s3-us-west-1.amazonaws.com/h...s_fullsize.jpgKay McNulty, Alyse Snyder, and Sis Stump operate the differential analyzer in the basement of the Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, circa 1942-1945.
More: https://en.wikipedia.org/wiki/Differential_analyser
Bookmarks