Glenn Seaborg, Edwin McMillan, J. W. Kennedy, and A. C. Wahl bombarded uranium oxide with 16-MeV deuterons to produce plutonium (Pu, element 94) in 1940.
Michael Faraday enunciated first law of electrolysis, "Chemical power, like magnetic force, is in direct proportion to the absolute quantity of electricity which passes," 1832.
Helen Abbott Michael born 1857: chemical composition of plants; synthetic organic chemistry; author (under the pseudonym Celen Sabbrin), of Science and Philosophy in Art.