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Atomic Theory Discoveries

By audreygray
  • 460

    Democritus

    Democritus
    He developed the basic idea of atoms.

  • John Dalton's Discovery

    John Dalton's Discovery
    He conducted experiments that led to the widespread acceptance of the atom.

  • J.J. Thomson's Discovery

    J.J. Thomson's Discovery
    He discovered that atoms were not simple solid spheres.

  • Ernest Rutherford's Discovery

    Ernest Rutherford's Discovery
    He developed a more complete understanding of the structure of the atom.

  • Niel Bohr's Discovery

    Niel Bohr's Discovery
    He proposed that electrons orbit around the nucleus.

  • Werner Heisenberg

    Werner Heisenberg
    He discovered the Uncertainty Principle, which said that it is impossible to determine the position and momentum of a subatomic particle.

  • Erwin Schrödinger

    Erwin Schrödinger
    Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position.

  • James Chadwick's Discovery

    James Chadwick's Discovery
    He discovered the neutron and believed it was the only subatomic particle in the nucleus.