Proposed that electric and magnetic fields filled space.
Stoney, G.J. (1874)
Proposed that electricity consisted of discrete negative particles he named 'electrons'.
Lewis, Gilbert N. (1875-1946)
Proposed electron-pair theory of acids and bases.
Aston, F.W. (1877-1945)
Pioneer research on isotope separation by mass spectrograph. Nobel Prize 1922.
Sir William Crookes (1879)
Discovered that cathode rays travel in straight lines, impart a negative charge, are deflected by electric and magnetic fields (indicating negative charge), cause glass to fluoresce, and cause pinwheels in their path to spin (indicating mass).
Fischer, Hans (1881-1945)
Research on porphyrins, chlorophyll, carotene. Synthesized hemin. Nobel Prize in 1930.
Langmuir, Irving (1881-1957)
Research in the fields of surface chemistry, monomolecular films, emulsion chemistry, electric discharges in gases, cloud seeding. Nobel Prize in 1932.
Staudinger, Hermann (1881-1965)
Studied high-polymer structure, catalytic synthesis, polymerization mechanisms. Nobel Prize in 1963.
Flemming, Sir Alexander (1881-1955)
Discovered the antibiotic penicillin (1928). Nobel Prize in 1945.
Goldstein, E. (1886)
Used cathode ray tube to study 'canal rays', which possessed electrical and magnetic properties opposite those an electron.
Hertz, Heinrich (1887)
Discovered the photoelectric effect.
Moseley, Henry G.J. (1887-1915)
Discovered the relation between the frequency of the x-rays emitted by an element and its atomic number (1914). His work led to the reorganization of the periodic table based on atomic number rather than atomic mass.
Hertz, Heinrich (1888)
Discovered radio waves.
Adams, Roger (1889-1971)
Industrial research on catalysis and methods of structural analysis.
Midgley, Thomas (1889-1944)
Discovered tetraethyl lead and it used as an antiknock treatment for gasoline (1921). Discovered fluorocarbon refrigerants. Performed early research on synthetic rubber.
Ipatieff, Vladimir N. (1890?-1952)
Research and development of catalytic alkylation and isomerisation of hydrocarbons (together with Herman Pines).
Banting, Sir Frederick (1891-1941)
Isolated the insulin molecule. Nobel Prize in 1923.
Chadwick, Sir James (1891-1974)
Discovered the neutron (1932). Nobel Prize in 1935.
Urey, Harold C. (1894-1981)
One of the leaders of the Manhattan Project. Discovered deuterium. Nobel Prize 1934.
Roentgen, Wilhelm (1895)
Discovered that certain chemicals near a cathode ray tube glowed. Found highly-penetrating rays that were not deflected by a magnetic field, which he named 'x-rays'.
Becquerel, Henri (1896)
While studying effects of x-rays on photographic film, he discovered that some chemicals spontaneously decompose and emit very penetrating rays.
Carothers, Wallace (1896-1937)
Synthesized neoprene (polychloroprene) and nylon (polyamide).
Thomson, Joseph J. (1897)
Discovered the electron. Used a cathode ray tube to experimentally determine the charge to mass ratio of an electron. Found that 'canal rays' were associated with the proton H+.
