1905 in science
Encyclopedia
The year 1905 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, particularly in physics, listed below.

Astronomy

  • January 2 - Charles Dillon Perrine
    Charles Dillon Perrine
    Charles Dillon Perrine was an American astronomer living in Argentina.Born in Steubenville, Ohio, a son of Peter and Elizabeth McCauley Perrine, and a descendant of Daniel Perrin, "The Huguenot", he worked at Lick Observatory from 1893 to 1909 and then was director of the Argentine National...

     at Lick Observatory
    Lick Observatory
    The Lick Observatory is an astronomical observatory, owned and operated by the University of California. It is situated on the summit of Mount Hamilton, in the Diablo Range just east of San Jose, California, USA...

     discovers Elara
    Elara (moon)
    Elara is a prograde irregular satellite of Jupiter. It was discovered by Charles Dillon Perrine at Lick Observatory in 1905. It is the eighth largest moon of Jupiter and is named after the mother by Zeus of the giant Tityus....

    , one of Jupiter's natural satellites
    Jupiter's natural satellites
    Jupiter has 64 confirmed moons, giving it the largest retinue of moons with "reasonably secure" orbits of any planet in the Solar System. The most massive of them, the four Galilean moons, were discovered in 1610 by Galileo Galilei and were the first objects found to orbit a body that was neither...

    .
  • The Dominion Observatory
    Dominion Observatory
    The Dominion Observatory was an astronomical observatory in Ottawa, Canada that operated from 1902 to 1970. The Observatory was also an institution within the Canadian Federal Government. The observatory grew out of the Department of the Interior's need for the precise coordinates and timekeeping...

     opens in Ottawa
    Ottawa
    Ottawa is the capital of Canada, the second largest city in the Province of Ontario, and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario...

    .
  • Various astronomers discover the minor planets 554 Peraga
    554 Peraga
    -External links:*...

     through 583 Klotilde
    583 Klotilde
    -External links:*...

     (see List of asteroids/501-600).
  • The nova
    Nova
    A nova is a cataclysmic nuclear explosion in a star caused by the accretion of hydrogen on to the surface of a white dwarf star, which ignites and starts nuclear fusion in a runaway manner...

     V604 Aquilae
    V604 Aquilae
    V604 Aquilae or Nova Aquilae 1905 was a nova, which occurred in the constellation Aquila in 1905 with a maximum brightness of 7.6 mag.-External links:* * * *...

     appears in the constellation
    Constellation
    In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

     Aquila
    Aquila (constellation)
    Aquila is a stellar constellation. Its name is Latin for 'eagle' and it is commonly represented as such. In mythology, Aquila was owned by the Roman god Jupiter and performed many tasks for him....

    .
  • The Umov effect
    Umov effect
    The Umov effect, also known as Umov's law, is a relationship between the albedo of an astronomical object, and the degree of polarization of light reflecting off it...

     is noted by Nikolay Umov
    Nikolay Umov
    Nikolay Alekseevich Umov was a Russian physicist and mathematician known for discovering the concept of Umov-Poynting vector and Umov effect.-Biography:...

    .

Biology

  • William Bateson
    William Bateson
    William Bateson was an English geneticist and a Fellow of St. John's College, Cambridge...

     coins the term "genetics
    Genetics
    Genetics , a discipline of biology, is the science of genes, heredity, and variation in living organisms....

    " in a letter to Adam Sedgwick.
  • Nettie Stevens
    Nettie Stevens
    Nettie Maria Stevens was an early American geneticist. She and Edmund Beecher Wilson were the first researchers to describe the chromosomal basis of sex....

     and Edmund Beecher Wilson
    Edmund Beecher Wilson
    Edmund Beecher Wilson was a pioneering American zoologist and geneticist. He wrote one of the most famous textbooks in the history of modern biology, The Cell.- Career :...

     independently describe the XY sex-determination system
    XY sex-determination system
    The XY sex-determination system is the sex-determination system found in humans, most other mammals, some insects and some plants . In this system, females have two of the same kind of sex chromosome , and are called the homogametic sex. Males have two distinct sex chromosomes , and are called...

    .
  • Stamen Grigorov
    Stamen Grigorov
    Stamen Grigorov was a prominent Bulgarian physician and microbilogist.Stamen Grigorov was born in the village of Studen Izvor , Tran Region, Bulgaria. He completed his secondary education in natural sciences in Montpellier, France and medical science in Geneva, Switzerland. In 1905, at the age of...

     identifies the bacterium Lactobacillus bulgaricus
    Lactobacillus bulgaricus
    Lactobacillus delbrueckii subspecies bulgaricus is one of several bacteria used for the production of yogurt. It is also found in other naturally fermented products...

    , a major agent in the creation of yogurt.
  • National Association of Audubon Societies for the Protection of Wild Birds and Animals
    National Audubon Society
    The National Audubon Society is an American non-profit environmental organization dedicated to conservation. Incorporated in 1905, Audubon is one of the oldest of such organizations in the world and uses science, education and grassroots advocacy to advance its conservation mission...

     established in the United States
    United States
    The United States of America is a federal constitutional republic comprising fifty states and a federal district...

    .

Chemistry

  • Carl von Linde
    Carl von Linde
    Professor Doctor Carl Paul Gottfried von Linde was a German engineer who developed refrigeration and gas separation technologies...

     obtains pure liquid oxygen
    Liquid oxygen
    Liquid oxygen — abbreviated LOx, LOX or Lox in the aerospace, submarine and gas industries — is one of the physical forms of elemental oxygen.-Physical properties:...

     and nitrogen
    Liquid nitrogen
    Liquid nitrogen is nitrogen in a liquid state at a very low temperature. It is produced industrially by fractional distillation of liquid air. Liquid nitrogen is a colourless clear liquid with density of 0.807 g/mL at its boiling point and a dielectric constant of 1.4...

     by cooling air.
  • Alfred Einhorn synthesises the local anesthetic
    Local anesthetic
    A local anesthetic is a drug that causes reversible local anesthesia, generally for the aim of having local analgesic effect, that is, inducing absence of pain sensation, although other local senses are often affected as well...

     novocaine.
  • The first commercial production of calcium nitrate
    Calcium nitrate
    Calcium nitrate, also called Norgessalpeter , is the inorganic compound with the formula Ca2. This colourless salt absorbs moisture from the air and is commonly found as a tetrahydrate. It is mainly used as a component in fertilizers but is found other applications...

     as a fertilizer
    Fertilizer
    Fertilizer is any organic or inorganic material of natural or synthetic origin that is added to a soil to supply one or more plant nutrients essential to the growth of plants. A recent assessment found that about 40 to 60% of crop yields are attributable to commercial fertilizer use...

     begins.

Mathematics

  • Pierre Fatou
    Pierre Fatou
    Pierre Joseph Louis Fatou was a French mathematician working in the field of complex analytic dynamics. He entered the École Normale Supérieure in Paris in 1898 to study mathematics and graduated in 1901 when he was appointed an astronomy post in the Paris Observatory...

     defines the Mandelbrot set
    Mandelbrot set
    The Mandelbrot set is a particular mathematical set of points, whose boundary generates a distinctive and easily recognisable two-dimensional fractal shape...

    .
  • Oswald Veblen
    Oswald Veblen
    Oswald Veblen was an American mathematician, geometer and topologist, whose work found application in atomic physics and the theory of relativity. He proved the Jordan curve theorem in 1905.-Life:...

     proves the Jordan curve theorem
    Jordan curve theorem
    In topology, a Jordan curve is a non-self-intersecting continuous loop in the plane, and another name for a Jordan curve is a "simple closed curve"...

    .
  • Martin Kutta describes the popular fourth-order Runge-Kutta method.
  • James Cullen
    James Cullen (mathematician)
    Father James Cullen, S.J. was born at Drogheda, County Louth, Ireland.He studied mathematics at the Trinity College, Dublin for a while, but eventually turned to theology and was ordained as a Jesuit on 1 July 1901....

    , S.J.
    Society of Jesus
    The Society of Jesus is a Catholic male religious order that follows the teachings of the Catholic Church. The members are called Jesuits, and are also known colloquially as "God's Army" and as "The Company," these being references to founder Ignatius of Loyola's military background and a...

    , begins the study of Cullen number
    Cullen number
    In mathematics, a Cullen number is a natural number of the form n · 2n + 1 . Cullen numbers were first studied by Fr. James Cullen in 1905...

    s.
  • Emanuel Lasker
    Emanuel Lasker
    Emanuel Lasker was a German chess player, mathematician, and philosopher who was World Chess Champion for 27 years...

     proves the Lasker–Noether theorem
    Lasker–Noether theorem
    In mathematics, the Lasker–Noether theorem states that every Noetherian ring is a Lasker ring, which means that every ideal can be written as an intersection of finitely many primary ideals...

     for the special case of polynomial ring
    Polynomial ring
    In mathematics, especially in the field of abstract algebra, a polynomial ring is a ring formed from the set of polynomials in one or more variables with coefficients in another ring. Polynomial rings have influenced much of mathematics, from the Hilbert basis theorem, to the construction of...

    s.

Paleontology

  • The Saurian Expedition
    Saurian Expedition of 1905
    The Saurian Expedition of 1905 was a noted paleontological research mission in northern Nevada in the United States. The expedition recovered many of the finest specimens of ichthyosaur ever found.The expedition was led by Prof. John C...

     led by John C. Merriam
    John C. Merriam
    John Campbell Merriam was an American paleontologist. The first vertebrate paleontologist on the West Coast of the United States, he is best known for his taxonomy of vertebrate fossils at the La Brea Tar Pits in Los Angeles, particularly with the genus Smilodon, more commonly known as the...

     recovers many specimens of ichthyosaur
    Ichthyosaur
    Ichthyosaurs were giant marine reptiles that resembled fish and dolphins...

    .
  • Tyrannosaurus rex
    Tyrannosaurus
    Tyrannosaurus meaning "tyrant," and sauros meaning "lizard") is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex , commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other...

    is described and named by Henry Fairfield Osborn
    Henry Fairfield Osborn
    Henry Fairfield Osborn, Sr. ForMemRS was an American geologist, paleontologist, and eugenicist.-Early life and career:...

    .

Physics

  • Albert Einstein
    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...

     publishes his four Annus Mirabilis papers
    Annus Mirabilis Papers
    The Annus Mirabilis papers are the papers of Albert Einstein published in the Annalen der Physik scientific journal in 1905. These four articles contributed substantially to the foundation of modern physics and changed views on space, time, and matter...

    . In particular, he formulates the theory of special relativity
    Special relativity
    Special relativity is the physical theory of measurement in an inertial frame of reference proposed in 1905 by Albert Einstein in the paper "On the Electrodynamics of Moving Bodies".It generalizes Galileo's...

     and states the law of mass-energy conservation: E = mc²
    Mass-energy equivalence
    In physics, mass–energy equivalence is the concept that the mass of a body is a measure of its energy content. In this concept, mass is a property of all energy, and energy is a property of all mass, and the two properties are connected by a constant...

    . He also explains the photoelectric effect
    Photoelectric effect
    In the photoelectric effect, electrons are emitted from matter as a consequence of their absorption of energy from electromagnetic radiation of very short wavelength, such as visible or ultraviolet light. Electrons emitted in this manner may be referred to as photoelectrons...

     by quantization
    Quantum mechanics
    Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...

     and mathematically analyzes Brownian motion
    Brownian motion
    Brownian motion or pedesis is the presumably random drifting of particles suspended in a fluid or the mathematical model used to describe such random movements, which is often called a particle theory.The mathematical model of Brownian motion has several real-world applications...

    . Because of this, 1905 is said to be the miraculous year for physics
    Physics
    Physics is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.Physics is one of the oldest academic...

    , and its 100th anniversary (2005
    2005 in science
    The year 2005 in science and technology involved some significant events.-Astronomy:* April 8 – Total solar eclipse*February 23 – Astronomers announce the discovery of a galaxy, VIRGOHI21, that consists almost entirely of dark matter...

    ) will be declared the World Year of Physics
    World Year of Physics 2005
    The year 2005 has been named the World Year of Physics in recognition of the 100th anniversary of Albert Einstein's "Miracle Year," in which he published four landmark papers, and the subsequent advances in the field of physics.-History:...

    .

Psychology

  • Sigmund Freud
    Sigmund Freud
    Sigmund Freud , born Sigismund Schlomo Freud , was an Austrian neurologist who founded the discipline of psychoanalysis...

     publishes Drei Abhandlungen zur Sexualtheorie (Three Essays on the Theory of Sexuality
    Three Essays on the Theory of Sexuality
    Three Essays on the Theory of Sexuality is a 1905 work by Sigmund Freud which advanced his theory of sexuality, in particular its relation to childhood...

    ) and Der Witz und seine Beziehung zum Unbewußten (Jokes and their Relation to the Unconscious).

Technology

  • Pathé Frères colorise black-and-white films by machine.
  • Alfred Buchi files a patent for the turbocharger
    Turbocharger
    A turbocharger, or turbo , from the Greek "τύρβη" is a centrifugal compressor powered by a turbine that is driven by an engine's exhaust gases. Its benefit lies with the compressor increasing the mass of air entering the engine , thereby resulting in greater performance...

    .
  • Paul de Vivie
    Paul de Vivie
    Paul de Vivie, who wrote as Velocio , was publisher of Le Cycliste, an early champion of derailleur gears, and father of French bicycle touring and randonneuring.-Background:...

     invents a two-speed derailleur gear for bicycle
    Bicycle
    A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist....

    s.
  • Pipe manufactures the first automobile
    Automobile
    An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

     with a hemi engine
    Hemi engine
    A Hemi engine is an internal combustion engine in which the roof of each cylinder's combustion chambers is of hemispherical form.- History :...

    .
  • Walter Griffiths
    Walter Griffiths
    Walter Griffiths was a member of the South Australian House of Assembly.-Background:Born in Kent Town, South Australia, the son of Frederick Griffiths, a wealthy ironmonger, and his wife Helen, née Giles, Griffiths attended St Aloysius College and Saint Peter's College in Adelaide.Aged fifteen...

     invents a manually-powered domestic vacuum cleaner
    Vacuum cleaner
    A vacuum cleaner, commonly referred to as a "vacuum," is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors, and optionally from other surfaces as well. The dirt is collected by either a dustbag or a cyclone for later disposal...

    .
  • Reginald Fessenden
    Reginald Fessenden
    Reginald Aubrey Fessenden , a naturalized American citizen born in Canada, was an inventor who performed pioneering experiments in radio, including early—and possibly the first—radio transmissions of voice and music...

     invents the superheterodyne receiver
    Superheterodyne receiver
    In electronics, a superheterodyne receiver uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which can be more conveniently processed than the original radio carrier frequency...

    .

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...

    s
    • 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...

       - Philipp Eduard Anton von Lenard
    • 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,...

       - Johann Friedrich Wilhelm Adolf von Baeyer
    • 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...

       - Robert Koch
      Robert Koch
      Heinrich Hermann Robert Koch was a German physician. He became famous for isolating Bacillus anthracis , the Tuberculosis bacillus and the Vibrio cholerae and for his development of Koch's postulates....


Births

  • February 1 - Emilio G. Segrè
    Emilio G. Segrè
    Emilio Gino Segrè was an Italian-born, naturalized American, physicist and Nobel laureate in physics, who with Owen Chamberlain, discovered antiprotons, a sub-atomic antiparticle.-Biography:...

     (d. 1989
    1989 in science
    The year 1989 in science and technology involved many significant events, some listed below.-Astronomy:* August – the asteroid 4769 Castalia is the first asteroid directly imaged, by radar from Arecibo....

    ), 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...

    , Nobel laureate
  • February 23 - Derrick Henry Lehmer
    Derrick Henry Lehmer
    Derrick Henry "Dick" Lehmer was an American mathematician who refined Édouard Lucas' work in the 1930s and devised the Lucas–Lehmer test for Mersenne primes...

     (d. 1991
    1991 in science
    The year 1991 in science and technology involved many significant events, some listed below.-Astronomy and space exploration:* May 18 – Helen Sharman becomes the first British person in space, flying with the Soyuz TM-12 mission...

    ), mathematician
    Mathematician
    A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

  • March 18 - Thomas Townsend Brown
    Thomas Townsend Brown
    Thomas Townsend Brown was an American physicist.-Early and middle years:Brown was born in Zanesville, Ohio; his parents were Lewis K. and Mary Townsend Brown. In 1921, Brown discovered what was later called the Biefeld-Brown effect while experimenting with a Coolidge X-ray tube. This is a vacuum...

     (d. 1985
    1985 in science
    The year 1985 in science and technology involved many significant events, listed below.-Environment:* May 16 – Scientists of the British Antarctic Survey announce discovery of the ozone hole.-Exploration:...

    ), physicist.
  • March 27 - Elsie MacGill
    Elsie MacGill
    Elizabeth Muriel Gregory "Elsie" MacGill, OC , known as the "Queen of the Hurricanes", was the world's first female aircraft designer. She worked as an aeronautical engineer during the Second World War and did much to make Canada a powerhouse of aircraft construction during her years at Canadian...

     (d. 1980
    1980 in science
    The year 1980 in science and technology involved some significant events, listed below.-Astronomy and space exploration:* November 12 – Voyager program: The NASA space probe Voyager I makes its closest approach to Saturn when it flies within of the planet's cloud-tops and sends the first high...

    ), aeronautical
    Aeronautics
    Aeronautics is the science involved with the study, design, and manufacturing of airflight-capable machines, or the techniques of operating aircraft and rocketry within the atmosphere...

     engineer
    Engineer
    An engineer is a professional practitioner of engineering, concerned with applying scientific knowledge, mathematics and ingenuity to develop solutions for technical problems. Engineers design materials, structures, machines and systems while considering the limitations imposed by practicality,...

    , "Queen of the Hurricanes"
  • April 13 - Bruno Rossi
    Bruno Rossi
    Bruno Benedetto Rossi was a leading Italian-American experimental physicist. He made major contributions to cosmic ray and particle physics from 1930 through the 1950s, and pioneered X-ray astronomy and space plasma physics in the 1960s.-Biography:Rossi was born in Venice, Italy...

     (d. 1993
    1993 in science
    The year 1993 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* December 2 - STS-61 is launched. This Space Shuttle mission to the Hubble Space Telescope installs corrective optics, plus upgrades, that not only allow the telescope to focus...

    ), physicist and astronomer
    Astronomer
    An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

  • April 18 - George H. Hitchings (d 1998
    1998 in science
    The year 1998 in science and technology involved many events, some of which are included below.-Astronomy and space exploration:* January–September – Cosmologists from the Supernova Cosmology Project led by Saul Perlmutter and the High-z Supernova Search Team led by Adam Riess and Brian...

    ), scientist, Nobel laureate in Medicine
  • April 20 - Albrecht Unsöld
    Albrecht Unsöld
    Albrecht Otto Johannes Unsöld was a German astrophysicist known for his contributions to spectroscopic analysis of stellar atmospheres.-Career:...

     (d. 1995
    1995 in science
    The year 1995 in science and technology involved many significant events, listed below.-Archaeology:* January 18 - In southern France near Vallon-Pont-d'Arc a network of caves are discovered that contain paintings and engravings that are 17,000 to 20,000 years old.* Wes Linster discovers the first...

    ), astronomer
  • August 1 - Helen Sawyer Hogg
    Helen Sawyer Hogg
    Helen Battles Sawyer Hogg, CC was a prolific astronomer noted for her research into globular clusters...

     (d. 1993
    1993 in science
    The year 1993 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* December 2 - STS-61 is launched. This Space Shuttle mission to the Hubble Space Telescope installs corrective optics, plus upgrades, that not only allow the telescope to focus...

    ), astronomer
  • August 11 - Erwin Chargaff
    Erwin Chargaff
    Erwin Chargaff was an American biochemist who emigrated to the United States during the Nazi era. Through careful experimentation, Chargaff discovered two rules that helped lead to the discovery of the double helix structure of DNA...

     (d. 2002
    2002 in science
    The year 2002 in science and technology involved some significant events.-Astronomy and space exploration:* February 19 - NASA's Mars Odyssey space probe begins to map the surface of Mars using its thermal emission imaging system....

    ), biochemist
    Biochemist
    Biochemists are scientists who are trained in biochemistry. Typical biochemists study chemical processes and chemical transformations in living organisms. The prefix of "bio" in "biochemist" can be understood as a fusion of "biological chemist."-Role:...

  • August 16 - Marian Rejewski
    Marian Rejewski
    Marian Adam Rejewski was a Polish mathematician and cryptologist who in 1932 solved the plugboard-equipped Enigma machine, the main cipher device used by Germany...

     (d. 1980
    1980 in science
    The year 1980 in science and technology involved some significant events, listed below.-Astronomy and space exploration:* November 12 – Voyager program: The NASA space probe Voyager I makes its closest approach to Saturn when it flies within of the planet's cloud-tops and sends the first high...

    ), mathematician and cryptologist
  • August 31 - Robert Bacher
    Robert Bacher
    Robert Fox Bacher was an American nuclear physicist and one of the leaders of the Manhattan Project.-Early life and career:...

     (d. 2004
    2004 in science
    The year 2004 in science and technology involved some significant events.-Anthropology:*October 27 - Remains of a previously unknown species of human is discovered in Indonesia...

    ), nuclear physicist
    Nuclear physics
    Nuclear physics is the field of physics that studies the building blocks and interactions of atomic nuclei. The most commonly known applications of nuclear physics are nuclear power generation and nuclear weapons technology, but the research has provided application in many fields, including those...

  • September 3 - Carl David Anderson
    Carl David Anderson
    Carl David Anderson was an American physicist. He is best known for his discovery of the positron in 1932, an achievement for which he received the 1936 Nobel Prize in Physics, and of the muon in 1936.-Biography:...

     (d. 1991
    1991 in science
    The year 1991 in science and technology involved many significant events, some listed below.-Astronomy and space exploration:* May 18 – Helen Sharman becomes the first British person in space, flying with the Soyuz TM-12 mission...

    ), physicist, Nobel laureate
  • September 17 - Hans Freudenthal
    Hans Freudenthal
    Hans Freudenthal was a Dutch mathematician. He made substantial contributions to algebraic topology and also took an interest in literature, philosophy, history and mathematics education....

     (d. 1990
    1990 in science
    The year 1990 in science and technology involved some significant events.-Astronomy and space exploration:* April 24 – The Space Shuttle Discovery places the Hubble Space Telescope into orbit.-Computer science:...

    ), mathematician
  • September 22 - Eugen Sänger
    Eugen Sänger
    Eugen Sänger was an Austrian-German aerospace engineer best known for his contributions to lifting body and ramjet technology.-Early career:...

     (d. 1964
    1964 in science
    The year 1964 in science and technology involved some significant events, listed below.-Astronomy and space exploration:* March 20 - The precursor of the European Space Agency, ESRO is established .* July 31 - Ranger program: Ranger 7 sends back the first close-up photographs of the Moon; images...

    ), aerospace engineer
  • September 24 - Severo Ochoa
    Severo Ochoa
    Severo Ochoa de Albornoz was a Spanish-American doctor and biochemist, and joint winner of the 1959 Nobel Prize in Physiology or Medicine with Arthur Kornberg.-Early life:...

     (d. 1993
    1993 in science
    The year 1993 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* December 2 - STS-61 is launched. This Space Shuttle mission to the Hubble Space Telescope installs corrective optics, plus upgrades, that not only allow the telescope to focus...

    ), biochemist, Nobel laureate
  • September 30 - Nevill Francis Mott
    Nevill Francis Mott
    Sir Nevill Francis Mott, CH, FRS was an English physicist. He won the Nobel Prize for Physics in 1977 for his work on the electronic structure of magnetic and disordered systems, especially amorphous semiconductors. The award was shared with Philip W. Anderson and J. H...

     (d. 1996
    1996 in science
    The year 1996 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* January 30 – Comet Hyakutake is discovered.* February 17 – NEAR Shoemaker spacecraft launched...

    ), physicist, Nobel laureate
  • October 15 - C. P. Snow
    C. P. Snow
    Charles Percy Snow, Baron Snow of the City of Leicester CBE was an English physicist and novelist who also served in several important positions with the UK government...

     (d. 1980
    1980 in science
    The year 1980 in science and technology involved some significant events, listed below.-Astronomy and space exploration:* November 12 – Voyager program: The NASA space probe Voyager I makes its closest approach to Saturn when it flies within of the planet's cloud-tops and sends the first high...

    ), physicist and novelist
  • October 22 - Karl Guthe Jansky
    Karl Guthe Jansky
    Karl Guthe Jansky was an American physicist and radio engineer who in August 1931 first discovered radio waves emanating from the Milky Way. He is considered one of the founding figures of radio astronomy.- Early life :...

     (d. 1950
    1950 in science
    The year 1950 in science and technology included some significant events.-Astronomy and space sciences:* Dutch astronomer Jan Oort postulates the existence of an orbiting cloud of planets at the outermost edge of the Solar System....

    ), physicist
  • October 22 - Albert Whitford
    Albert Whitford
    Albert Edward Whitford was an American astronomer.Whitford was born in Milton, Wisconsin and attended Milton College. He received his PhD from the University of Wisconsin–Madison. He served as the director of Washburn Observatory from 1948 to 1958. From 1958 to 1968 he was the director of Lick...

     (d. 2002
    2002 in science
    The year 2002 in science and technology involved some significant events.-Astronomy and space exploration:* February 19 - NASA's Mars Odyssey space probe begins to map the surface of Mars using its thermal emission imaging system....

    ), astronomer
  • October 23 - Felix Bloch
    Felix Bloch
    Felix Bloch was a Swiss physicist, working mainly in the U.S.-Life and work:Bloch was born in Zürich, Switzerland to Jewish parents Gustav and Agnes Bloch. He was educated there and at the Eidgenössische Technische Hochschule, also in Zürich. Initially studying engineering he soon changed to physics...

     (d. 1983
    1983 in science
    The year 1983 in science and technology involved many significant events, as listed below.-Biology:* April – Kary Mullis discovers polymerase chain reaction.* May – First report of the virus that causes AIDS....

    ), 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...

    , Nobel laureate
  • October 31 - Harry Harlow
    Harry Harlow
    Harry Frederick Harlow was an American psychologist best known for his maternal-separation and social isolation experiments on rhesus monkeys, which demonstrated the importance of care-giving and companionship in social and cognitive development...

     (d. 1981
    1981 in science
    The year 1981 in science and technology involved many significant events, listed below.-Medicine:* June 5 - AIDS pandemic begins when the United States Centers for Disease Control and Prevention reports an unusual cluster of Pneumocystis pneumonia in five homosexual men in Los Angeles.* Dr Bruce...

    ), psychologist
    Psychologist
    Psychologist is a professional or academic title used by individuals who are either:* Clinical professionals who work with patients in a variety of therapeutic contexts .* Scientists conducting psychological research or teaching psychology in a college...

  • December 7 - Gerard Kuiper
    Gerard Kuiper
    Gerard Peter Kuiper , Netherlands – December 24, 1973, Mexico City) was a Dutch-American astronomer after whom the Kuiper belt was named.-Early life:...

     (d. 1973
    1973 in science
    The year 1973 in science and technology involved one significant event, listed below.-Astronomy and space exploration:* March 7 - Comet Kohoutek is discovered* April 6 - Launch of Pioneer 11 spacecraft...

    ), astronomer
  • December 16 - Piet Hein
    Piet Hein (Denmark)
    Piet Hein was a Danish scientist, mathematician, inventor, designer, author, and poet, often writing under the Old Norse pseudonym "Kumbel" meaning "tombstone"...

     (d. 1996
    1996 in science
    The year 1996 in science and technology involved many significant events, listed below.-Astronomy and space exploration:* January 30 – Comet Hyakutake is discovered.* February 17 – NEAR Shoemaker spacecraft launched...

    ), mathematician

Deaths

  • January 4 - Paul Henry (b. 1848
    1848 in science
    The year 1848 in science and technology involved some significant events, listed below.-Events:* September 20 - The American Association for the Advancement of Science is set up in Pennsylvania by re-formation of the Association of American Geologists and Naturalists, with William Charles Redfield...

    ), astronomer
    Astronomer
    An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

  • January 14 - Ernst Abbe (b. 1840
    1840 in science
    The year 1840 in science and technology involved some significant events, listed below.-Events:* William Whewell publishes the term scientist....

    , physicist
  • March 24 - Jules Verne
    Jules Verne
    Jules Gabriel Verne was a French author who pioneered the science fiction genre. He is best known for his novels Twenty Thousand Leagues Under the Sea , A Journey to the Center of the Earth , and Around the World in Eighty Days...

     (b. 1828
    1828 in science
    The year 1828 in science and technology involved some significant events, listed below.-Astronomy:* Félix Savary computes the first orbit of a visual double star when he calculates the orbit of the double star Xi Ursae Majoris.-Biochemistry:...

    ), science fiction
    Science fiction
    Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

     author
  • April 14 - Otto Wilhelm von Struve
    Otto Wilhelm von Struve
    Otto Wilhelm von Struve was a Russian astronomer. In Russian, his name is normally given as Otto Vasil'evich Struve...

     (b. 1819
    1819 in science
    The year 1819 in science and technology involved some significant events, listed below.-Exploration:* A British Arctic expedition under William Edward Parry comprising HMS Hecla and HMS Griper reaches longitude 112°51' W in the Northwest Passage, the furthest west which will be attained by any...

    ), astronomer
    Astronomer
    An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

  • June 18 - Per Teodor Cleve
    Per Teodor Cleve
    Per Teodor Cleve was a Swedish chemist and geologist.After graduating from the Stockholm Gymnasium in 1858, Cleve matriculated at Uppsala University in May 1858, where he received his PhD in 1863...

     (b. 1840
    1840 in science
    The year 1840 in science and technology involved some significant events, listed below.-Events:* William Whewell publishes the term scientist....

    ), 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...

  • September 19 - Thomas Barnardo
    Thomas John Barnardo
    Thomas John Barnardo was a philanthropist and founder and director of homes for poor children, born in Dublin. From the foundation of the first Barnardo's home in 1870 to the date of Barnardo’s death, nearly 100,000 children had been rescued, trained and given a better life.- Early life :Barnardo...

     (b. 1845
    1845 in science
    The year 1845 in science and technology involved some significant events, listed below.-Events:* January 14 – Physikalische Gesellschaft zu Berlin established and begins publishing Fortschritte der Physik and Verhandlungen....

    ), 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...

     and philanthropist
    Philanthropist
    A philanthropist is someone who engages in philanthropy; that is, someone who donates his or her time, money, and/or reputation to charitable causes...

    .
  • October 6 - Ferdinand von Richthofen
    Ferdinand von Richthofen
    Ferdinand Freiherr von Richthofen was a German traveller, geographer, and scientist.-Biography:He was born in Carlsruhe, Prussian Silesia, and was educated in Breslau and Berlin. He traveled or studied in the Alps of Tyrol and the Carpathians in Transylvania...

     (b. 1833
    1833 in science
    The year 1833 in science and technology involved some significant events, listed below.-Astronomy:* November 12–13 - A spectacular occurrence of the Leonid meteor shower is observed over Alabama.-Biology:...

    ), geologist
    Geologist
    A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes and history that has shaped it. Geologists usually engage in studying geology. Geologists, studying more of an applied science than a theoretical one, must approach Geology using...

  • November 15 (O.S. November 2) - Ivan Sechenov
    Ivan Sechenov
    Ivan Mikhaylovich Sechenov near Simbirsk, Russia – , Moscow), was a Russian physiologist, named by Ivan Pavlov as "The Father of Russian physiology"...

     (d. 1829
    1829 in science
    The year 1829 in science and technology involved some significant events, listed below.-Chemistry:* Isaac Holden produces a form of friction match.-Mathematics:...

    ), "the father of Russian physiology
    Physiology
    Physiology is the science of the function of living systems. This includes how organisms, organ systems, organs, cells, and bio-molecules carry out the chemical or physical functions that exist in a living system. The highest honor awarded in physiology is the Nobel Prize in Physiology or...

    "
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