Also on This Day in History January 9
Discover what happened on January 9 with HISTORY's summaries of major events, anniversaries,
famous births and notable deaths.
Births on This Day, January 9
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1950
Alec Jeffreys
English geneticist who discovered the technique of DNA fingerprinting, used for unique identification of humans, animals and other organisms from their DNA material on 10 Sep 1984.
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1908
Karl Dussik
Karl (Theodore) Dussik was an Austrian neurologist and psychiatrist who has been called the "Father of Ultrasonic Diagnosis".
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1823
Friedrich von Esmarch
German surgeon who was the first to introduce a first-aid kit and triage on the battlefield.
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1869
Richard Wilhelm Heinrich Abegg
He was a German chemist and pioneer of valence theory. He proposed that the difference of the maximum positive and negative valence of an element tends to be eight.
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1870
Amadeus W. Grabau
He was an American geologist and palaeontologist known for his work on world stratigraphic deposits and the deciphering of Earth history.
Deaths on This Day, January 9
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1998
Kenichi Fukui
Japanese chemist who shared the 1981 Nobel Prize for Chemistry with Roald Hoffmann for investigation of the mechanisms of chemical reactions.
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1799
Maria Gaetana Agnesi
Italian mathematician and philosopher who was the first woman in the Western world considered to be a mathematician.
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1833
Adrien-Marie Legendre
French mathematician who contributed to number theory, celestial mechanics and elliptic functions.
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1848
Caroline Lucretia Herschel
German-born British astronomer, sister of Sir William Herschel, who assisted in his astronomical researches making calculations associated with his studies.
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1958
Willis R. Whitney
He was an American chemist and research director who founded the General Electric Company's research laboratory and directed pioneering work there.