1919 in science
Encyclopedia
The year 1919 in science
Science
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe...

and technology
Technology
Technology is the making, usage, and knowledge of tools, machines, techniques, crafts, systems or methods of organization in order to solve a problem or perform a specific function. It can also refer to the collection of such tools, machinery, and procedures. The word technology comes ;...

 involved some significant events, listed below.

Chemistry

  • June 1 - The term covalence in relation to chemical bonding model
    Chemical bonding model
    Chemical bonding models are theoretical models used to explain atomic bonding structure, molecular geometry, properties, and reactivity of physical matter.- Overview :...

    s is first used by Irving Langmuir
    Irving Langmuir
    Irving Langmuir was an American chemist and physicist. His most noted publication was the famous 1919 article "The Arrangement of Electrons in Atoms and Molecules" in which, building on Gilbert N. Lewis's cubical atom theory and Walther Kossel's chemical bonding theory, he outlined his...

    .

History of science

  • Leonard Eugene Dickson
    Leonard Eugene Dickson
    Leonard Eugene Dickson was an American mathematician. He was one of the first American researchers in abstract algebra, in particular the theory of finite fields and classical groups, and is also remembered for a three-volume history of number theory.-Life:Dickson considered himself a Texan by...

     begins publication of History of the Theory of Numbers.

Physics

  • May 29 - Einstein's
    Albert Einstein
    Albert Einstein was a German-born theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and one of the most prolific intellects in human history...

     theory of general relativity
    General relativity
    General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1916. It is the current description of gravitation in modern physics...

     confirmed by Arthur Eddington's observation of the "bending of light" during the total solar eclipse
    Solar eclipse of May 29, 1919
    A total solar eclipse occurred on May 29, 1919. With a maximum duration of totality of 6 minutes 51 seconds, it was one of the longest solar eclipses of the 20th century. It was visible throughout most of South America and Africa as a partial eclipse...

     on this day.
  • Arnold Sommerfeld
    Arnold Sommerfeld
    Arnold Johannes Wilhelm Sommerfeld was a German theoretical physicist who pioneered developments in atomic and quantum physics, and also educated and groomed a large number of students for the new era of theoretical physics...

     and Walther Kossel
    Walther Kossel
    Walther Ludwig Julius Kossel was a German physicist known for his theory of the chemical bond , Sommerfeld–Kossel displacement law of atomic spectra, the Kossel-Stranski model for crystal growth, and the Kossel effect...

     publish their displacement law.
  • James Jeans discovers that the dynamical constants of motion determine the distribution function for a system of particles.

Psychology

  • In Berlin
    Berlin
    Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

     Dr Magnus Hirschfeld
    Magnus Hirschfeld
    Magnus Hirschfeld was a German physician and sexologist. An outspoken advocate for sexual minorities, Hirschfeld founded the Scientific Humanitarian Committee, which Dustin Goltz called "the first advocacy for homosexual and transgender rights."-Early life:Hirschfeld was born in Kolberg in a...

     and Arthur Kronfeld
    Arthur Kronfeld
    Arthur Kronfeld was a German Psychiatrist.-1933 - 1941: Suppression and exile :...

     found the Institut für Sexualwissenschaft
    Institut für Sexualwissenschaft
    The Institut für Sexualwissenschaft was an early private sexology research institute in Germany from 1919 to 1933. The name is variously translated as Institute of Sex Research, Institute for Sexology or Institute for the Science of Sexuality...

    .

Technology

  • First crossings of the Atlantic Ocean
    Atlantic Ocean
    The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

     by air.
    • May 8–31 - US Navy Curtiss
      Curtiss Aeroplane and Motor Company
      Curtiss Aeroplane and Motor Company was an American aircraft manufacturer that went public in 1916 with Glenn Hammond Curtiss as president. Throughout the 1920s and 1930s, the company was the largest aircraft manufacturer in the United States...

       floatplane
      Floatplane
      A floatplane is a type of seaplane, with slender pontoons mounted under the fuselage; only the floats of a floatplane normally come into contact with water, with the fuselage remaining above water...

       NC-4
      NC-4
      The NC-4 was a Curtiss NC flying boat which was designed by Glenn Curtiss and his team, and manufactured by Curtiss Aeroplane and Motor Company. In May 1919, the NC-4 became the first aircraft to fly across the Atlantic Ocean, starting in the United States and making the crossing as far as Lisbon,...

       commanded by Albert Cushing Read
      Albert Cushing Read
      Albert Cushing "Putty" Read was an aviator and Rear Admiral in the United States Navy.-Biography:Read was born in Lyme, New Hampshire into a Boston Brahmin family. He attended the U.S. Naval Academy at Annapolis, graduating in the Class of 1907. In 1915, he was designated Naval Aviator No. 24.As...

       makes the first transatlantic flight
      Transatlantic flight
      Transatlantic flight is the flight of an aircraft across the Atlantic Ocean. A transatlantic flight may proceed east-to-west, originating in Europe or Africa and terminating in North America or South America, or it may go in the reverse direction, west-to-east...

      , from Naval Air Station Rockaway
      Naval Air Station Rockaway
      Naval Air Station Rockaway adjoined Fort Tilden on the western portion of the Rockaway Peninsula in the New York City borough of Queens. It was established on transferred municipal property in 1917 during American involvement in World War I, and was demolished in 1930 to make way for Jacob Riis Park...

       to Lisbon
      Lisbon
      Lisbon is the capital city and largest city of Portugal with a population of 545,245 within its administrative limits on a land area of . The urban area of Lisbon extends beyond the administrative city limits with a population of 3 million on an area of , making it the 9th most populous urban...

       via the Azores
      Azores
      The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the...

      .
    • June 14–15 - A Vickers Vimy
      Vickers Vimy
      The Vickers Vimy was a British heavy bomber aircraft of the First World War and post-First World War era. It achieved success as both a military and civil aircraft, setting several notable records in long-distance flights in the interwar period, the most celebrated of which was the first non-stop...

       flown by John Alcock
      John Alcock (aviator)
      Sir John William Alcock KBE, DSC was a Captain in the Royal Air Force who, together with navigator Lieutenant Arthur Whitten Brown, piloted the first non-stop transatlantic flight from St. John's, Newfoundland to Clifden, Connemara, Ireland.-Biography:Jack Alcock was born on 5 November 1892 at...

       and Arthur Whitten Brown
      Arthur Whitten Brown
      Sir Arthur Whitten Brown KBE was the navigator of the first successful non-stop transatlantic flight.-Life and work:...

       makes the first nonstop transatlantic flight, from St. John's, Newfoundland, to Clifden
      Clifden
      Clifden is a town on the coast of County Galway, Ireland and being Connemara's largest town, it is often referred to as "the Capital of Connemara". It is located on the Owenglen River where it flows into Clifden Bay...

      , Ireland
      Ireland
      Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

      .
    • July 2–6 - British airship
      Airship
      An airship or dirigible is a type of aerostat or "lighter-than-air aircraft" that can be steered and propelled through the air using rudders and propellers or other thrust mechanisms...

       R34 makes the first transatlantic flight by dirigible, and the first westbound flight, from RAF East Fortune
      RAF East Fortune
      RAF East Fortune is a former RAF station, just south of the village of East Fortune in East Lothian, Scotland. The motto of the station was "Fortune Favours the Bold"....

      , Scotland
      Scotland
      Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

      , to Mineola, New York
      Mineola, New York
      Mineola is a village in Nassau County, New York, USA. The population was 18,799 at the 2010 census. The name is derived from a Native American word meaning a "pleasant place"....

      .
  • December 1 - XWA, in Montreal, Quebec, is the first public radio station in North America to broadcast.

Awards

  • Nobel Prize
    Nobel Prize
    The Nobel Prizes are annual international awards bestowed by Scandinavian committees in recognition of cultural and scientific advances. The will of the Swedish chemist Alfred Nobel, the inventor of dynamite, established the prizes in 1895...

    • Physics
      Nobel Prize in Physics
      The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and...

       - Johannes Stark
      Johannes Stark
      Johannes Stark was a German physicist, and Physics Nobel Prize laureate who was closely involved with the Deutsche Physik movement under the Nazi regime.-Early years:...

    • Chemistry
      Nobel Prize in Chemistry
      The Nobel Prize in Chemistry is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895, awarded for outstanding contributions in chemistry, physics, literature,...

       - not awarded
    • Medicine
      Nobel Prize in Physiology or Medicine
      The Nobel Prize in Physiology or Medicine administered by the Nobel Foundation, is awarded once a year for outstanding discoveries in the field of life science and medicine. It is one of five Nobel Prizes established in 1895 by Swedish chemist Alfred Nobel, the inventor of dynamite, in his will...

       - Jules Bordet
      Jules Bordet
      Jules Jean Baptiste Vincent Bordet was a Belgian immunologist and microbiologist. The bacterial genus Bordetella is named after him.-Biography:Bordet was born at Soignies, Belgium...


Births

  • January 23 - Hans Hass
    Hans Hass
    Hans Hass is a diving pioneer known mainly for his documentaries about sharks, the energon theory, and his commitment, later in life, to the protection of the environment. He was born in Vienna, Austria.-Early years:...

    , zoologist and oceanographer.
  • June 22 - Henri Tajfel
    Henri Tajfel
    Henri Tajfel was a British social psychologist, best known for his pioneering work on the cognitive aspects of prejudice and social identity theory, as well as being one of the founders of the European Association of Experimental Social Psychology.-Early life in Poland:Tajfel grew up in Poland...

     (d. 1982
    1982 in science
    The year 1982 in science and technology involved many significant events, listed below.-Astronomy:* March 10 – Syzygy: all 9 planets align on the same side of the Sun.-History of science:...

    ), social psychologist.
  • September 6 - Wilson Greatbatch
    Wilson Greatbatch
    Wilson Greatbatch was an American engineer and inventor whois most widely known as the inventor of the implantable cardiac pacemaker...

     (d. 2011
    2011 in science
    The year 2011 in science and technology involves many significant events and discoveries, some of which are listed below. 2011 was declared the International Year of Forests and Chemistry by the United Nations.- January :...

    ), biomedical engineer.

Deaths

  • February 19 - Frederick DuCane Godman
    Frederick DuCane Godman
    Frederick DuCane Godman D.C.L., F.R.S., F.L.S., F.G.S., F.R.G.S., F.E.S., F.Z.S., M.R.I., F.R.H.S., M.B.O.U. was an English lepidopterist, entomologist and ornithologist....

     (b. 1834
    1834 in science
    The year 1834 in science and technology involved some significant events, listed below.-Events:* March - William Whewell first publishes the term scientist in the Quarterly Review, but notes it as "not generally palatable"....

    ), lepidopterist
    Lepidopterist
    A lepidopterist is a person who specialises in the study of Lepidoptera, members of an order encompassing moths and the three superfamilies of butterflies, skipper butterflies, and moth-butterflies...

    , entomologist and ornithologist.
  • April 4 - Sir William Crookes
    William Crookes
    Sir William Crookes, OM, FRS was a British chemist and physicist who attended the Royal College of Chemistry, London, and worked on spectroscopy...

     (b. 1832
    1832 in science
    The year 1832 in science and technology involved some significant events, listed below.-Biology:* Isidore Geoffroy Saint-Hilaire begins publication of Histoire générale et particulière des anomalies de l’organisation chez l’homme et les animaux, a key text on teratology.-Exploration:* April 21 -...

    ), chemist
    Chemist
    A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

     and physicist
    Physicist
    A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

    .
  • April 17 - Bernhard Sigmund Schultze
    Bernhard Sigmund Schultze
    Bernhard Sigmund Schultze; sometimes spelled Bernhard Sigismund Schultze was a German obstetrician and gynecologist born in Freiburg im Breisgau...

     (b. 1827
    1827 in science
    The year 1827 in science and technology involved some significant events, listed below.-Chemistry:* Aluminium isolated by Friedrich Wöhler.* William Prout classifies the components of food into the three main divisions of carbohydrates, fats and proteins....

    ), obstetrician.
  • June 30 - John William Strutt, 3rd Baron Rayleigh (b. 1842
    1842 in science
    The year 1842 in science and technology involved some significant events, listed below.-Exploration:* Antarctic explorer James Clark Ross charts the eastern side of James Ross Island and on January 23 reaches a Farthest South of 78°09'30"S.-Medicine:...

    ), Nobel Prize
    Nobel Prize
    The Nobel Prizes are annual international awards bestowed by Scandinavian committees in recognition of cultural and scientific advances. The will of the Swedish chemist Alfred Nobel, the inventor of dynamite, established the prizes in 1895...

    -winning physicist
    Physicist
    A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

    .
  • July 21 - Gustaf Retzius
    Gustaf Retzius
    Magnus Gustaf Retzius was a Swedish physician and anatomist who dedicated a large part of his life to researching the histology of the sense organs and nervous system.-Biography:...

     (b. 1842
    1842 in science
    The year 1842 in science and technology involved some significant events, listed below.-Exploration:* Antarctic explorer James Clark Ross charts the eastern side of James Ross Island and on January 23 reaches a Farthest South of 78°09'30"S.-Medicine:...

    ), anatomist.
  • August 8 - Ernst Haeckel
    Ernst Haeckel
    The "European War" became known as "The Great War", and it was not until 1920, in the book "The First World War 1914-1918" by Charles à Court Repington, that the term "First World War" was used as the official name for the conflict.-Research:...

     (b. 1834
    1834 in science
    The year 1834 in science and technology involved some significant events, listed below.-Events:* March - William Whewell first publishes the term scientist in the Quarterly Review, but notes it as "not generally palatable"....

    ), zoologist.
  • December 29 - Sir William Osler
    William Osler
    Sir William Osler, 1st Baronet was a physician. He was one of the "Big Four" founding professors at Johns Hopkins Hospital as the first Professor of Medicine and founder of the Medical Service there. Sir William Osler, 1st Baronet (July 12, 1849 – December 29, 1919) was a physician. He was...

     (b. 1849
    1849 in science
    The year 1849 in science and technology involved some significant events, listed below.-Astronomy:* Édouard Roche finds the limiting radius of tidal destruction and tidal creation for a body held together only by its self gravity, called the Roche limit, and uses it to explain why Saturn's rings do...

    ), physician
    Physician
    A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...

    .
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