From Merit Ptah—Chief Physician of ancient Egypt—to 1st-century BC alchemist Mary the Jewess, the Science Chicks from History Tumblr is dedicated to introducing you to all the science-y ladies you didn't learn about in school.
The image above is titled "Woman teaching geometry”. It comes from an early 14th century translation of Euclid.
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.