Rachel Plotnick, Northwestern University

Department of the History and Sociology of Science, University of Pennsylvania

Monday, December 3, 2012, 8:30 pm EST

Time: 3:30pm

Location: 337 Cohen Hall, University of Pennsylvania

Date
Mon, Dec 3 2012, 8:30pm | 0 seconds
Image
Cogwheel

Engineering: a large cogwheel, front and side elevations. Coloured drawing, 1875.