Science on the year of 1931 in history

Science

Date	Type	Text
30 Nov 1930 Bernard Lyot	science	Bernard Lyot (astronomy) French astronomer Bernard Lyot invents the coronagraph.
30 Nov 1930 Erich Hückel	science	Erich Hückel (chemistry) Erich Hückel proposes Hückel's rule, which explains when a planar ring molecule will have aromatic properties.
30 Nov 1930 Harold Urey	science	Harold Urey (chemistry) Harold Urey and associates at Columbia University demonstrate the existence of heavy water.
30 Nov 1930 Het Nederlandsch Historisch Natuurwetenschappelijk Museum	science	Het Nederlandsch Historisch Natuurwetenschappelijk Museum (history of science) Het Nederlandsch Historisch Natuurwetenschappelijk Museum ("The Dutch Historical Museum of the Natural Sciences") opens in Leiden.
30 Nov 1930 Adolf Butenandt	science	Adolf Butenandt (medicine) Adolf Butenandt discovered androsterone.
30 Nov 1930 John Haven Emerson	science	John Haven Emerson (medicine) John Haven Emerson and August Krogh introduce new forms of negative pressure ventilator.
30 Nov 1930 electroencephalography	science	electroencephalography (medicine) The first electroencephalography is performed by Hans Berger in Germany.
30 Nov 1930 Ernst Ruska	science	Ernst Ruska (physics) Ernst Ruska and Max Knoll built the first prototype electron microscope.
30 Nov 1930 László Bíró	science	László Bíró (technology) László Bíró first exhibits his ballpoint pen, in Budapest.
30 Nov 1930 George Beauchamp	science	George Beauchamp (technology) George Beauchamp invents the electric guitar.
30 Nov 1930 Hoover Dam	science	Hoover Dam (technology) Construction of the Hoover Dam begins on the Colorado River in the United States (chief designing engineer: John L. Savage).
01 Jan 1931 Kurt Gödel	science	Kurt Gödel (mathematics) Kurt Gödel's "On Formally Undecidable Propositions..." is published in Monatshefte für Mathematik.
01 Jan 1931 Martinus Beijerinck	science	death Martinus Beijerinck Martinus Beijerinck (born 1851), Dutch microbiologist and botanist.
03 Jan 1931 Albert Einstein	science	Albert Einstein (other s) Albert Einstein begins doing research at the California Institute of Technology, along with astronomer Edwin Hubble. In October the Caltech Department of Physics faculty and graduate students meet with Einstein as a guest.
02 Feb 1931 Rocket mail	science	Rocket mail In 1931, a rocket was first used to deliver mail in Austria.
03 Feb 1931 Herman Frederik Carel ten Kate	science	death Herman Frederik Carel ten Kate Herman Frederik Carel ten Kate (born 1858), Dutch anthropologist.
10 Feb 1931 Carl Rettenmeyer	science	birth Carl Rettenmeyer Carl Rettenmeyer (died 2009), American biologist who specialised in army ants.
11 Feb 1931 Sir Charles Parsons	science	death Sir Charles Parsons Sir Charles Parsons (born 1854), British inventor of the steam turbine.
14 Mar 1931 Movie theatre design	science	Movie theatre design In 1931, the first US motion picture theatre built especially for rear projection of the movie was opened in New York City.
25 Mar 1931 John A. Eddy	science	birth John A. Eddy John A. Eddy (died 2009), American astronomer.
23 May 1931 Aldred Scott Warthin	science	death Aldred Scott Warthin Aldred Scott Warthin (born 1867), American cancer geneticist.
27 May 1931 Swiss	science	Swiss (technology) Swiss-born scientist Auguste Piccard and his assistant, engineer Paul Kipfer, taking off from Augsburg, Germany, reach a record altitude of 15,785 m (51,788 ft) in a balloon with a pressurized gondola, gathering data on the upper atmosphere and measuring cosmic rays, the first human flight into the stratosphere.
18 Jul 1931 Oskar Minkowski	science	death Oskar Minkowski Died 18 Jul 1931 at age 73 (born 13 Jan 1858). German physiologist and pathologist who introduced the concept that diabetes results from suppression of a pancreatic substance (later found to be the hormone insulin). After studying how fat is metabolized by the body, in 1889, Oskar Minkowski and Joseph von Mering uncovered the role of the pancreas in diabetes. In an experiment in which they removed the pancreas from a dog, it consequently developed diabetes. He was the brother of mathematician Hermann Minkowski (whose idea of a four-dimensional or "Minkowski space", laid the mathematical foundation of Albert Einstein's general theory of relativity). Oskar's son, Rudolf Minkowski was a physicist and astronomer.
20 Aug 1931 Ayhan Ulubelen	science	birth Ayhan Ulubelen Ayhan Ulubelen, Turkish natural product chemist.
23 Aug 1931 Hamilton O. Smith	science	birth Hamilton O. Smith Hamilton O. Smith American microbiologist and Nobel laureate.
30 Aug 1931 Jack Swigert	science	birth Jack Swigert Jack Swigert (died 1982), American astronaut.
27 Sep 1931 W. Maxwell Cowan	science	birth W. Maxwell Cowan W. Maxwell Cowan (died 2002), South African neuroanatomist
05 Oct 1931 American	science	American (technology) American aviators Clyde Edward Pangborn and Hugh Herndon, Jr., complete the first non-stop flight across the Pacific Ocean, from Misawa, Japan, to East Wenatchee, Washington, in 41½ hours.
08 Oct 1931 John Monash	science	death John Monash General Sir John Monash (born 1865), Australian civil engineer.
12 Oct 1931 Ole-Johan Dahl	science	birth Ole-Johan Dahl Ole-Johan Dahl (died 2002), Norwegian computer scientist, pioneer of object-oriented programming.
17 Oct 1931 Alfons Maria Jakob	science	death Alfons Maria Jakob Alfons Maria Jakob (born 1884), German neuropathologist.
18 Oct 1931 Thomas Edison	science	death Thomas Edison Thomas Edison (born 1847), American inventor.
24 Oct 1931 George Washington Bridge	science	George Washington Bridge (technology) The George Washington Bridge across the Hudson River in the United States is dedicated; it opens to traffic the following day. At 3,500 feet (1,100 m), it nearly doubles the previous record for the longest suspension span in the world.
21 Nov 1931 James Whale	science	James Whale (other s) Release of James Whale's film of Frankenstein in New York, with electrical effects designed by Kenneth Strickfaden.
27 Nov 1931 David Bruce	science	death David Bruce Sir David Bruce (born 1855), Scottish microbiologist.
03 Dec 1931 Alka-Seltzer	science	Alka-Seltzer (medicine) The drug Alka-Seltzer is placed on the market.
08 Dec 1931 Coaxial cable	science	Coaxial cable In 1931, the invention of coaxial cable was issued a U.S. patent for the first time in the U.S., described as a "concentric conducting system". The inventors were Lloyd Espenschied of Kew Gardens, N.Y. and Herman A. Affel of Ridgewood, N.J. The patent was assigned to the American Telegraph and Telephone Co. of New York City. (No. 1,835,031). The application was television, for which a wide range of transmision frequencies is required. Whereas individual channel requirements for telegraphy are of the order of a few hundred cycles at most, and telephony perhaps a few thousand cycles, television requires bands of hundreds of thousands of cycles in width to ensure a reasonable degree of picture detail. A single pair concentric conductor arrangement is used.
14 Dec 1931 Alan Blumlein	science	Alan Blumlein (technology) British electronics engineer Alan Blumlein of EMI submits a U.K. patent application for "Improvements in and relating to Sound-transmission, Sound-recording and Sound-reproducing Systems" – binaural or stereophonic sound.

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Science on the year of 1931 in history

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