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Science on the 30th of November 1920 in history

Science

Date	Type	Text
30 Nov 1920 Winkel tripel projection	science	Winkel tripel projection (cartography) Winkel tripel projection proposed.	0
30 Nov 1920 Étienne Biéler	science	Étienne Biéler (chemistry) Étienne Biéler and James Chadwick publish a key paper on the strong interaction.	0
30 Nov 1920 Thomas Midgley	science	Thomas Midgley (chemistry) Thomas Midgley discovers the effective anti-knocking properties of tetraethyllead, which is used in "leaded" gasoline (petrol).	0
30 Nov 1920 Danish	science	Danish (exploration) Danish explorer Lauge Koch first sets foot on and names Kaffeklubben Island, the northernmost point of land on Earth.	0
30 Nov 1920 John Maynard Keynes	science	John Maynard Keynes (mathematics) John Maynard Keynes publishes A Treatise on Probability.	0
30 Nov 1920 Emmy Noether	science	Emmy Noether (mathematics) Emmy Noether publishes Idealtheorie in Ringbereichen, developing ideal ring theory, an important text in the field of abstract algebra.	0
30 Nov 1920 Ludwig Wittgenstein	science	Ludwig Wittgenstein (mathematics) First publication of Ludwig Wittgenstein's Tractatus Logico-Philosophicus, as "Logisch-Philosophische Abhandlung" in Annalen der Naturphilosophie.	0
30 Nov 1920 American	science	American (medicine) American biochemist Elmer McCollum identifies the presence of a component in cod liver oil which cures rickets, which he calls vitamin D.	0
30 Nov 1920 Fidel Pagés	science	Fidel Pagés (medicine) Fidel Pagés pioneers epidural anesthesia.	0
30 Nov 1920 T. Kaluza	science	T. Kaluza (physics) T. Kaluza demonstrates that a five-dimensional version of Albert Einstein's equations unifies gravitation and electromagnetism.	0
30 Nov 1920 Hermann Rorschach	science	Hermann Rorschach (psychology) Hermann Rorschach publishes Psychodiagnostik, proposing the inkblot test.	0
30 Nov 1920 Gaëtan Gatian de Clérambault	science	Gaëtan Gatian de Clérambault (psychology) Gaëtan Gatian de Clérambault publishes Les Psychoses passionelles, a comprehensive review of erotomania.	0
30 Nov 1920 vibraphone	science	vibraphone (technology) The vibraphone in its original form is invented in the United States.	0
30 Nov 1920 E. W. Scripps	science	E. W. Scripps (institutions) Journalist E. W. Scripps and biologist William Emerson Ritter found Science Service, later renamed Society for Science and the Public, in the United States with the goal of keeping the public informed of scientific developments.	0

29th November 1920 1st December 1920

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