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30 Nov 1911
length of day |
length of day (astronomy) At the beginning of this year an extreme decadal variation in length of day produces mean solar days having a duration of 86400.00389 seconds of Terrestrial Time (or ephemeris time), the slowest rotation of Earth's crust ever to be recorded. |
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30 Nov 1911
Peter Debye |
Peter Debye (chemistry) Peter Debye derives the T-cubed law for the low temperature heat capacity of a nonmetallic solid. |
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30 Nov 1911
Casimir Funk |
Casimir Funk (chemistry) Casimir Funk introduces the concept of vitamins. |
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30 Nov 1911
German |
German (chemistry) Frans, a German chemist working for Griesheim-Elektron, patents a means of producing vinyl chloride from acetylene and hydrogen chloride using mercuric chloride as a catalyst. |
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30 Nov 1911
Fritz Klatte |
Fritz Klatte (chemistry) Fritz Klatte discovers polyvinyl acetate, and applies for a patent for its preparation from acetylene gas although it is not successfully commercialized at this time. |
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30 Nov 1911
Wilbur Scoville |
Wilbur Scoville (chemistry) Wilbur Scoville devises the Scoville scale for measuring the heat of peppers. |
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30 Nov 1911
Ghent |
Ghent (history of science) Isis, the journal of the history of science, is founded in Ghent by George Sarton. |
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30 Nov 1911
Georgius Agricola |
Georgius Agricola (history of science) Georgius Agricola's De re metallica (1556) is first published in an English translation, made by Herbert and Lou Henry Hoover, in London. |
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30 Nov 1911
Voynich manuscript |
Voynich manuscript (history of science) Voynich manuscript discovered. |
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30 Nov 1911
Alfred North Whitehead |
Alfred North Whitehead (mathematics) Publication of the 2nd volume of Principia Mathematica by Alfred North Whitehead and Bertrand Russell, one of the most important and seminal works in mathematical logic and philosophy. |
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30 Nov 1911
Karl F. Sundman |
Karl F. Sundman (mathematics) Karl F. Sundman solves the n-body problem for n=3. |
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30 Nov 1911
Harvey Cushing |
Harvey Cushing (medicine) Harvey Cushing identifies Cushing's disease, caused by a malfunction of the pituitary gland. |
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30 Nov 1911
Krupp |
Krupp (metallurgy) Krupp engineers Benno Strauss and Eduard Maurer patent austenitic stainless steel (October 17) and Elwood Haynes (in the United States) and Harry Brearley (of Brown-Firth in Sheffield, England) independently discover martensitic stainless steel alloys. |
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30 Nov 1911
Max von Laue |
Max von Laue (physics) Max von Laue suggests using crystal lattices to diffract X-rays. |
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30 Nov 1911
Walter Friedrich |
Walter Friedrich (physics) Walter Friedrich and Paul Knipping diffract X-rays in zinc blende. |
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30 Nov 1911
Victor Hess |
Victor Hess (physics) Victor Hess discovers that the ionization of air increases with altitude, indicating the existence of cosmic radiation. |
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30 Nov 1911
Carl Jung |
Carl Jung (psychology) Carl Jung publishes Wandlungen und Symbole der Libido (Psychology of the Unconscious). |
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30 Nov 1911
Sabina Spielrein |
Sabina Spielrein (psychology) Sabina Spielrein delivers her paper on "Destruction as the Cause of Coming Into Being" to the Vienna Psychoanalytic Society. |
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30 Nov 1911
Royal Navy |
Royal Navy (technology) The British Royal Navy introduces the director ship gun fire-control system using the Dreyer Table, a mechanical analogue computer. |
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30 Nov 1911
Sperry Corporation |
Sperry Corporation (technology) The Sperry Corporation develops the first gyroscopic autopilot ("gyroscopic stabilizer apparatus") for aviation use. |
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30 Nov 1911
Robert Ridgway |
Robert Ridgway (other s) American ornithologist Robert Ridgway publishes Color Standards and Color Nomenclature. |
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30 Nov 1911
Eugenics |
Eugenics (other s) First International Congress of Eugenics held in London with the support of Leonard Darwin, Winston Churchill, Auguste Forel, Alexander Graham Bell, Charles Davenport and other prominent scientists. |
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30 Nov 1911
Paul Zamecnik |
birth Paul Zamecnik November 22 - Paul Zamecnik (died 2009), American scientist playing a central role in the early history of molecular biology. |
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30 Nov 1911
Genevieve Grotjan Feinstein |
birth Genevieve Grotjan Feinstein Genevieve Grotjan Feinstein (died 2006), American mathematician and cryptanalyst. |
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