Author:
Title: 1920: The Shapley - Curtis Debate re: The Scale of the Universe (text, w/bibliography, glossary, lesson plan)
Year: n.d. Web
Format: Html
Price: Free
Publisher: NASA
Author: Debye, Petrus Josephus W. 1884-1966
Title: 1920: Van der Waals' Cohesive Forces (Physikalische Zeitschrift) ["explaining cohesive forces in a van der Waa
Year: 1920
Format: Html
Price: Free
Publisher: ChemTeam
Author: Bohr, Niels Henrik David, 1885-1962
Title: 1921: Atomic Structure [electronic structure of periodic table]
Year: 1921
Format: Html
Price: Free
Publisher: ChemTeam
Author: Bury, Charles R.
Title: 1921: Langmuir's Theory of the Arrangement of Electrons in Atoms & Molecules [elect structure of the periodic
Year: 1921
Format: Html
Price: Free
Publisher: ChemTeam
Author: Bohr, Niels Henrik David, 1885-1962
Title: 1921: The Structure of the Atom and the Physical and Chemical Properties of the Elements ["excerpt on the "cor
Year: 1921
Format: Html
Price: Free
Publisher: LeMoyne
Author: Brackett, Frederick Sumner
Title: 1922: Visible & Infra-Red Radiation of Hydrogen [Brackett series]
Year: 1922
Format: Html
Price: Free
Publisher: ChemTeam
Author: Compton, Arthur Holly, 1892-1962
Title: 1923: A Quantum Theory of the Scattering of X-Rays by Light Elements
Year: 1923
Format: Graphic PDF
Price: Free
Publisher: AmerInstPhys
Author: Debye, Petrus Josephus W. & E. Huckel
Title: 1923: On the Theory of Electrolytes. I. Freezing Point Depression & Related Phenomena [strong electrolytes]
Year: 1923
Format: Html
Price: Free
Publisher: ChemTeam
Author: Bronsted, J.N.
Title: 1923: Some Remarks on the Concept of Acids & Bases (Recueil des Trav. Chim. des Bays-Bas)
Year: 1923
Format: Html
Price: Free
Publisher: ChemTeam
Author: Stoner, Edmund C.
Title: 1924: The Distribution of Electrons among Atomic Levels (Philos Mag.) [correct electron distrobution]
Year: 1924
Format: Html
Price: Free
Publisher: ChemTeam
Author: Pauli, Wolfgang
Title: 1925: On the Connexion between the Completion of Electron Groups in an Atom w/the Complex Structure of Spectra
Year: 1925
Format: Html
Price: Free
Publisher: ChemTeam
Author: Davisson, Clinton & Lester H Germer
Title: 1927: Diffraction of Electrons by a Crystal of Nickel ["particles of matter can act like waves, as light waves
Year: 1927
Format: Graphic PDF
Price: Free
Publisher: AmerInstPhys
Author: Chandrasekhara V. Raman & K. S. Krishnan
Title: 1928: A New Type of Secondary Radiation ["on the Raman effect"]
Year: 1928
Format: Html
Price: Free
Publisher: UKentucky
Author: Lennard-Jones, J.E.
Title: 1929: The Electronic Structure of some Diatomic Molecules [predicts paramagnetism of dioxygen] (Trans. Faraday
Year: 1929
Format: Html
Price: Free
Publisher: ChemTeam
Author: Chadwick, James
Title: 1932-02: Possible Existence of a Neutron (Nature) [letter; discv of neutron]
Year: 1932
Format: Html
Price: Free
Publisher: ChemTeam
Author: Chadwick, James
Title: 1932-05: The Existence of a Neutonr (Nature) [article; discv of neutron]
Year: 1932
Format: Html
Price: Free
Publisher: ChemTeam
Author: Huxley, Julian
Title: 1932: Problems of relative growth [illus.]
Year: 1932 NY
Format: Graphic
Price: Free
Publisher: CornellU
Author: Pauling, Linus
Title: 1932: The Nature of the Chemical Bond. IV: The Energy of Single Bonds & the Relative Electronegativity of Atom
Year: 1932
Format: Html
Price: Free
Publisher: ChemTeam
Author: Lawrence, Ernest O., 1901-1958 & M.S. Li
Title: 1932: The Production of High Speed Light Ions Without the Use of High Voltages [original 1932 paper]
Year: 1932
Format: Html
Price: Free
Publisher: PhysicalReview
Author: Virgo, S. E.
Title: 1933: Loschmidt's Number ["article on Loschmidt's number"]
Year: 1933
Format: html
Price: Free
Publisher: TennTechU
Author: Anderson, Carl D.
Title: 1933: The Positive Electron ["positron, antiparticle to the electron, was discovered by accident, 1932"]
Year: 1933
Format: Graphic PDF
Price: Free
Publisher: AmerInstPhys
Author: Fermi, E.
Title: 1934-00: Possible Production of Elements of Atomic Number Higher than 92 (Nature) ["mistakenly identifies tran
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Rutherford, Ernest, 1871-1937
Title: 1934-03: Transmutation Effects observed with Heavy Hydrogen [letter; discovers fusion]
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Noddack, Ida
Title: 1934-09: On Element 93 ["critiques Fermi's claim to produce transuranic elements by bombarding thorium & urani
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Rutherford, Ernest, & M.L.E. Oliphant &
Title: 1934-0x: Transmutation Effects Observed with Heavy Hydrogen [article; discovers fusion] (Proc Royal Soc.)
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Einstein, Albert & B Podolsky, N Rosen
Title: 1935: Can Quantum-Mechanical Description of Physical Reality Be Considered Complete? (Phys Rev) ["the theory w
Year: 1935
Format: Graphic PDF
Price: Free
Publisher: AmerInstPhys
Author: Einstein, Albert ] Lindley, David
Title: 1935:] The Birth of Wormholes [commentary w/original paper]
Year: 1935
Format: Graphic PDF
Price: Free
Publisher: AmerInstPhys
Author: Einstein, Albert ] Kennefick, Daniel
Title: 1936: Einstein vs. the Physical Review [re paper submitted on gravitational waves & rejected by Phys Rev.; re
Year: 2005
Format: Graphic PDF
Price: Free
Publisher: PhysicsToday
Author: Einstein, Albert & N Rosen
Title: 1937: On Gravitational Waves (J. Franklin Inst.; scroll to note 6 for URL link)
Year: 1937
Format: Graphic PDF
Price: Free
Publisher: PhysicsToday
Author: Hahn, Otto & Fritz Strassmann
Title: 1939-01: Concerning the Existence of Alkaline Earth Metals Resulting from Neutron Irradiation of Uranium [anno
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Hahn, Otto & Fritz Strassmann
Title: 1939-01: Concerning the Existence of Alkaline Earth Metals Resulting from Neutron Irradiation of Uranium [anno
Year: 1934
Format: Html
Price: Free
Publisher: ChemTeam
Author: Bohr, Niels Henrik David, 1885-1962
Title: 1939-02: Disintegration of Heavy Nuclei (Nature) ["on the Liquid Drop Model of Fission"]
Year: 1939
Format: Html
Price: Free
Publisher: ChemTeam
Author: Meitner, Lise & O.R. Frisch
Title: 1939-02: Disintegration of Uranium by Neutrons: a New Type of Nuclear Reaction (Nature) [on fission]
Year: 1939
Format: Html
Price: Free
Publisher: ChemTeam
Author: Hahn, Otto & Fritz Strassmann
Title: 1939-02: Proof of the Formation of Active Isotopes of Barium from Uranium & Thorium Irradiated with Neutrons;.
Year: 1939
Format: Html
Price: Free
Publisher: ChemTeam
Author: Frisch, O.R.
Title: 1939-??: Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment [on fission]
Year: 1939
Format: Html
Price: Free
Publisher: ChemTeam