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#OnThisDay, 7 Jan 1939, French physicist Marguerite Perey discovers element 87, which she later names francium. It was the last element to be discovered naturally.

Perey was a student of Maria Skłodowska-Curie. She was nominated five times for the Nobel Prize but never received it.

#WomenInSTEM #ScienceHistory #WomenInHistory #OTD #History #WomensHistory #Histodons
photo of Marguerite Perey in her long lab coat. She is a white woman with dark hair.


Esther Richards Applin was the first person to propose that geological stratigraphy could be read using the fossilized remains of protozoa called Foraminiferida. Naturally, being a woman, she was derided before her insight gave rise to a whole new field in geology, and credit was later shifted from her and her female colleagues to a group of men.

#ScienceHistory #HistoryOfGeology #WomenInSTEM #science #geology

https://paleonerdish.wordpress.com/2021/09/10/forgotten-women-of-paleontology-esther-richards-applin/

This post blatantly stolen from the "History of Geology" account on mstdn.social, who responds with irrational anger to requests for accessibility and descriptive text.
Black and white photo of a white woman who appears to be in her late 40s or early 50s. She has dark hair that's pulled back, serious, hooded eyes, and a slight smile.
A bunch of tiny fossilized imprints of Foraminiferida. They have various shapes, including round, nautilus, cowrie, and star pattern