| Date | Text | |
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30 Nov 1939
element |
element (chemistry) The radioactive element Astatine is synthesized by Dale R. Corson, Kenneth Ross MacKenzie and Emilio Segrè at the University of California, Berkeley. |
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30 Nov 1939
Neptunium |
Neptunium (chemistry) Neptunium, the first transuranic element, is synthesized by Edwin McMillan and Philip H. Abelson at the University of California, Berkeley. |
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30 Nov 1939
Louis Plack Hammett |
Louis Plack Hammett (chemistry) Louis Plack Hammett coins the term Physical organic chemistry when he uses it as the title of a textbook published in New York. |
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30 Nov 1939
Robert McCance |
Robert McCance (chemistry) Robert McCance and Elsie Widdowson publish the standard text The Chemical Composition of Foods. |
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30 Nov 1939
Johns Hopkins Hospital |
Johns Hopkins Hospital (medicine) At Johns Hopkins Hospital in the United States, Dr. Austin T. Moore (1899–1963) performs the first metallic hip replacement surgery. |
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30 Nov 1939
Magnetron |
Magnetron (physics) Cavity Magnetron invented by John Randall and Harry Boot. |
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30 Nov 1939
Spontaneous fission |
Spontaneous fission (physics) Spontaneous fission was first observed by Georgy Flyorov and Konstantin Petrzhak. |
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30 Nov 1939
Judith Pipher |
birth Judith Pipher Judith Pipher, American astrophysicist. |
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