History of the Atom

By Mykenzie2017
  • 370

    Democritus Dies

  • 375

    Democritus came to the conclusion that is you keep cutting something it cannot be cut anymore.

  • 442

    Democritus thought that all matter is composed of indivisible elements.

  • 460

    Democritus is born

  • Period: 460 to

    Atom History

  • Antoine Lavoisier born

  • John Dalton was born

  • Lavoisier proposed the Combustion Theory

  • John Dalton began teaching at age 12

  • Antoine Lavoisier died

  • Lavoisier convicted of treason

  • John Dalton developed the concept of the mole

  • J. J. Thomson is born

  • Marie Curie is born

  • Robert Millikan born

  • Ernest Rutherford is born

  • John Dalton died

  • Max Planck was born

  • Niels Bohr is born

  • James Chadwick born

    James Chadwick born

  • Robert Millikan started Columbia Univeristy

  • Ernest Rutherford started Cambridge University

  • Marie Curie discovered radium and polonium

  • J.J. Thomson discovered all atoms have electrons

  • Max Planck Came up with the equation to find the energy of an atom

  • Werner Heisenberg is born

    Werner Heisenberg is born

  • Marie Curie is awarded the Nobel Prize

  • J.J. Thomson is awarded the Nobel Prize

  • Robert Millikan discovered the charge of an electron.

    Described the atom as having a central nucleus surrounded by negative orbiting electrons.

  • Ernest Rutherford discovery

    Described the atom as having a central nucleus surrounded by negative orbiting electrons.

  • Max Planck married

  • Niels Bohr's discovery

    Alll electrons travel in stationary orbits defined by their momentum.
  • Werener Heisenburg said, "We cannot always assign to an electron a position in space at a given time, nor follow it in its orbit."

    Werener Heisenburg said, "We cannot always assign to an electron a position in space at a given time, nor follow it in its orbit."

    "We cannot always assign to an electron a position in space at a given time, nor follow it in its orbit."
  • James Chadwick discovered nuetrally-charged atoms

    James Chadwick discovered nuetrally-charged atoms

  • Marie Curie died

  • Ernest Rutherford dies

  • J. J. Thomson died

  • Max Planck died

  • Robert Millikan died

  • Niels Bohr dies

  • Werner Heisenberg dies

    Werner Heisenberg dies

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