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Quick Search: (Enter name, year, or keyword) SAMPLE PREVIEW OF CALENDAR ENTRIES: History of Science Women in Medicine and Science History of Mathematics History of Chemistry |
Chronology of the History of Science |
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1937 AD |
George Stibitz builds the first binary calculator at Bell Telephone Laboratories.
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1937 AD |
A particle of 200 electron masses is discovered in cosmic rays. While at first physicists thought it was Yukawa's pion, it was later discovered to be a muon.
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1937 AD |
Discovery of the muon
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1937 AD |
Albert Einstein, Leopold Infeld, and Banesh Hoffman show that the geodesic equations of general relativity can be deduced from its field equations
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1937 AD |
ALBERT SZENT-GY+RGYI VON NAGYRAPOLT for his discoveries in connection with the biological combustion processes, with special reference to vitamin C and the catalysis of fumaric acid.
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1937 AD |
Fritz Zwicky states that galaxies could act as gravitational lenses
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1937 AD |
Albert Einstein, Leopold Infeld, and Banesh Hoffman show that the geodesic equations of general relativity can be deduced from its field equations
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1937 AD |
Fritz Zwicky states that galaxies could act as gravitational lenses
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1937 AD |
Fritz Zwicky states that galaxies could act as gravitational lenses
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1937 AD |
A particle of 200 electron masses is discovered in cosmic rays. While at first physicists thought it was Yukawa's pion, it was later discovered to be a muon.
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1937 AD |
Pyotr Kapitza, superfluidity of helium II
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1937 AD |
Perrier and Segre, element 37, technetium, first element made artifically
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1937 AD |
Albert Einstein, Leopold Infeld, and Banesh Hoffman show that the geodesic equations of general relativity can be deduced from its field equations
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1937 AD |
H. Hellmann finds the Hellmann-Feynman theorem
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1937 AD |
Seth Neddermeyer, Carl Anderson, J.C. Street, and E.C. Stevenson discover muons using cloud chamber measurements of cosmic rays
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1937 AD |
George Stibitz builds his model K, which demonstrates the feasibility of mechanizing binary math
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1937 AD |
Julian Schwinger, Neutron spin is half
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1938 AD |
Zworykin develops first practical TV camera.
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1938 AD |
Bethe works out nuclear mechanism of sun.
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1938 AD |
CORNEILLE JEAN FRAN¦OIS HEYMANS for the discovery of the role played by the sinus and aortic mechanisms in the regulation of respiration.
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1938 AD |
Hewlett-Packard Co. is founded to make electronic equipment.
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1938 AD |
E.C.G. Stuckelberg observes that protons and neutrons do not decay into any combination of electrons, neutrinos, muons, or their antiparticles. The stability of the proton cannot be explained in terms of energy or charge conservation; he proposes that heavy particles are independently conserved.
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1938 AD |
Hahn, Strassmann, Meitner and Frisch discovered nuclear fission
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1938 AD |
Bethe hypothesized that nuclear fusion is the source of energy in stars
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1938 AD |
Hewlett-Packard Co. is founded to make electronic equipment.
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1938 AD |
Paul Dirac presents a cosmological theory where the gravitational constant decreases slowly so that the age of the universe divided by the
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1938 AD |
Konrad Zuse completes his Z1 calculating machine
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1938 AD |
E.C.G. Stuckelberg observes that protons and neutrons do not decay into any combination of electrons, neutrinos, muons, or their antiparticles. The stability of the proton cannot be explained in terms of energy or charge conservation; he proposes that heavy particles are independently conserved.
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1938 AD |
Hahn and Strassman discover fission of uranium.
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Urbain,
Georges Died: 11/5/1938 |
1938 AD | |
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1938 AD |
Frisch and Meitner, theory of uranium fission
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1938 AD |
Hendrick Kramers, mass renormalisation
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1938 AD |
Ernest Stueckelberg, suggests baryon number conservation
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1938 AD |
Fritz Zwicky, clusters of galaxies
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1938 AD |
Oskar Klein, new field equations from higher dimensional Kaluza-Klei theory
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1938 AD |
Hahn, Strassman, fission induced with neutrons
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1938 AD |
Isador Rabi, Magnetic Resonance
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1938 AD |
Bethe, Critchfield, von Weizsacker, stars are powered by nuclear fusion CN-cycle
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1938 AD |
Oppenheimer and Serber, there is an upper mass limit for stability of neutron stars
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1939 AD |
First Radio Shack catalog is published.
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1939 AD |
Discovery of Kirlian photography electrical "auras" surrounding living specimens
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1939 AD |
Joliot and Curie-Joliot, Szilard, theory of nuclear chain reaction
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1939 AD |
Oppenheimer and Snyder, a collapsing neutron star will form a black hole.
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1939 AD |
Bohr, Wheeler, Khariton, Zel'dovich ..., theory of U235 fission and chain reaction.
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1939 AD |
Bloch and Alvarez, measurement of the neutron magnetic moment
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1939 AD |
Rossi, Van Norman, Hilbery, Muon decay
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1939 AD |
Teller, Szilard, Einstein, warning letter to Roosevelt
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1939 AD |
Peierls and Frisch, critical mass and theory of A-Bomb
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1939 AD |
Marguerite Perey, element 87, francium
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1939 AD |
GERHARD DOMAGK for the discovery of the antibacterial effects of prontosil. (Caused by the authorities of his country to decline the award, but later received the diploma and the medal.)
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1939 AD |
The first regular TV broadcast in the U.S.
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1939 AD |
John J. Atanasoff designs a prototype for the ABC (Atanasoff-Berry Computer) with the help of graduate student Clifford Berry at Iowa State College. In 1973 a judge ruled it the first automatic digital computer.
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Bolton,
Edw. R. Died: 2/10/1939 |
1939 AD | |
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1939 AD |
First Radio Shack catalog is published.
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1939 AD |
John J. Atanasoff designs a prototype for the ABC (Atanasoff-Berry Computer) with the
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1939 AD |
Richard Feynman finds the Hellmann-Feynman theorem
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1939 AD |
Otto Hahn and Fritz Strassman bombard uranium salts with thermal neutrons and discover barium among the reaction products
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1939 AD |
Lise Meitner and Otto Frisch determine that nuclear fission is taking place in the Hahn-Strassman experiments
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1939 AD |
Robert Oppenheimer and Hartland Snyder calculate the collapse of a pressure-free homogeneous fluid sphere and find that it cuts
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1939 AD |
John Atanasoff begins work on his ABC computer
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1939 AD |
Howard Aiken begins work on the Harvard Mark 1 with funding from IBM
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1939 AD |
Einstein writes letter to FDR stating that nuclear weapons could be made.
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1939 AD |
Elsasser postulates earth's magnetic field due to eddy currents in liquid core.
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1940 AD |
Corson, MacKenzie, Segre, element 85, astatine synthesised
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1940 AD |
MacMillan, Abelson, element 93, neptunium, first transuranian elements
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1940 AD |
(1940-1942) The prize money was allocated to the Main Fund (1/3) and to the Special Fund (2/3) of this prize section.
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1940 AD |
First color TV broadcast.
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1940 AD |
Remote processing experiments, conducted by Bell Laboratories, create the first terminal.
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1940 AD |
At Bell Labs, George Stibitz demonstrates the Complex Number Calculator, which May be the first digital computer.
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1940 AD |
First color TV broadcast.
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1940 AD |
Remote processing experiments, conducted by Bell Laboratories, create the first terminal.
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1940 AD |
Zuse introduces his Z1, the first programmable calculating machine to use the binary system. It is used to solve complex engineering equations
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1940 AD |
Bell Labs' George Stibitz and Samuel Williams complete the Complex Number Computer, later known as the Bell Labs Model 1.
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1940 AD |
Stibittz later demonstrates the Model 1 at Dartmouth College with a terminal in New Hampshire and the Model 1 in New York
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1940 AD |
MacMillan discovers neptunium.
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1940 AD |
At Bell Labs, George Stibitz demonstrates the Complex Number Calculator, which may be the first digital computer.
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1941 AD |
Mckellar and Adams, Cosmic cyanogen observed to be at temperature of CBR, but significance not recognised
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1941 AD |
MacMillan, Kennedy, Seaborg, Wahl, element 94, plutonium, second transuranian elements
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1941 AD |
Rossi and Hall, Muon decay used to verify relativistic time dilation
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Nernst,
Walther Died: 11/18/1941 |
1941 AD | |
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1941 AD |
"Manhatten Project" is founded to develop atomic bomb
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1941 AD |
Colossus computer is designed by Alan M. Turing and built by M.H.A. Neuman at the University of Manchester, England.
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1941 AD |
Konrad Zuse builds the Z3 computer in Germany, the first calculating machine with automatic control of its operations.
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1941 AD |
C. Moller and Abraham Pais introduce the term "nucleon" as a generic term for protons and neutrons.
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1941 AD |
Colossus computer is designed by Alan M. Turing and built by M.H.A. Neuman at the University of Manchester, England.
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1941 AD |
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1941 AD |
Konrad Zuse builds the Z3
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1941 AD |
Zuse completes his Z3, the first program-controlled electromechanical digital computer.
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1941 AD |
In Britain, Alan Turing, M.H.A. Newman and Tommy Flowers complete work on the Colossus, the first all-electronic calculating machine. It is used during WWII to break German codes.
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1941 AD |
Seaborg isolates plutonium.
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1941 AD |
Flerov discovers spontaneous fission of uranium.
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1941 AD |
C. Moller and Abraham Pais introduce the term "nucleon" as a generic term for protons and neutrons.
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1941 AD |
Lev Davidovich Landau, theory of superfluids
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1942 AD |
Fermi produced the first nuclear chain reaction in an experiment
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1942 AD |
Establishment of the Manhattan Project to develop an atomic bomb
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1942 AD |
J.L. Doob states his theorem on Gaussian-Markoff processes
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1942 AD |
Hannes AlfvTn predicts magnetohydrodynamic waves in plasmas
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1942 AD |
Enrico Fermi makes the first controlled nuclear chain reaction
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1942 AD |
Ernst Stnckelberg introduces the propagator to positron theory and interprets positrons as negative energy electrons moving
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1942 AD |
John Mauchly and J.Presper Eckert propose a digital electronic version of Vannevar Bush's differential analyzer.
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