Emma Perry Carr (July 23, 1880 – January 7, 1972) was an American spectroscopist and chemical educator. Her work on unsaturated hydrocarbons and absorption spectra earned her the inaugural Francis P. Garvan Medal (now the Garvan–Olin Medal) from the American Chemical Society in 1937.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.