Atomic physics

7 lives in this collection worked in atomic physics, from 1856 to today. Each has a full course on their life and the mathematics and physics they made.

Often together with: nuclear physics, radioactivity. All fields

  • J. J. Thomson1856–1940

    Physicist who identified the electron as a universal constituent of matter, proposed the first electron model of the atom, separated isotopes of neon with positive rays, and directed the Cavendish Laboratory for 35 years.

    atomic physics, electromagnetism, conduction in gases

  • Robert Millikan1868–1953

    American experimental physicist who measured the elementary charge with the oil-drop method, confirmed Einstein's photoelectric equation, named cosmic rays and led Caltech from 1921 to 1945.

    experimental physics, atomic physics, cosmic rays

  • Arnold Sommerfeld1868–1951

    Theoretical physicist who extended Bohr's atom to elliptic and relativistic orbits, introduced the fine-structure constant, founded the quantum free-electron theory of metals, and trained the leading Munich school of theoretical physics.

    theoretical physics, mathematical physics, atomic physics

  • C. T. R. Wilson1869–1959

    Scottish physicist who invented the cloud chamber, making the tracks of single charged particles visible, and founded the modern theory of thunderstorm electricity.

    atomic physics, particle detectors, cloud physics

  • Ernest Rutherford1871–1937

    Experimental physicist who explained radioactivity as atomic transformation, discovered the atomic nucleus and produced the first artificial nuclear reaction.

    nuclear physics, radioactivity, atomic physics

  • Niels Bohr1885–1962

    Creator of the quantum model of the atom, the correspondence principle and complementarity, and founder of the Copenhagen institute at the centre of quantum mechanics.

    atomic physics, quantum theory, nuclear physics

  • Henry Moseley1887–1915

    Physicist whose X-ray spectra showed that atomic number is the charge of the nucleus and fixed the order and gaps of the periodic table.

    x-ray spectroscopy, atomic physics, radioactivity