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Atomic Theory Timeline

By 147488
  • John Dalton

    John Dalton
    English chemist and physicist who devoloped his work on the atomic theory. A point made from his theory is elements are made up of tiny particles called atoms. In 1803 Beethoven writes his 3rd symphony.
  • Joseph Proust

    Joseph Proust
    He was a French chemist who proved substances combine in proportions. During 1811, on Dec 16th a horrible earthquake in Madrid occured.
  • Henri Becquerel

    Henri Becquerel
    He was a French physicist who discovered radioactivity. In 1896 at this time, on April 6th, the first modern Olympic summer games are held in Athens, Greece.
  • J. J Thomson

    J. J Thomson
    Joseph John "J. J" Thomson was a British physicist who discovered the electron. An electron is a subatomic particle which carries a negative electric charge.
  • Max Planck

    Max Planck
    Max Planck was a German physicist who founded the quantum theory. Quantum theory is about the nature of matter. Quantum theory is a description of the wave-like interactions of energy and matter at atomic or subatomic scales. On May 17, 1900 The Wizard of Oz becomes published.
  • Robert Milikan

    Robert Milikan
    Robert Milikan was an American physicist who measured the charge on an electron. On July 13th this same year gold was discovered.
  • Neils Bohr

    Neils Bohr
    A Danish physicist who understood quatum mechanics as well as atomic structure. His theory of the Bohr atom, in which the theory that electrons travel in orbit's around the atom's nucleus. Around this time period on February 4th, 1913 Rosa Parks was born.
  • Louis de Broglie

    Louis de Broglie
    He was a French physicist who gave a theory about electron waves including the wave-particle theory of matter. In 1924 around this time period, on Feb 26th, hitler goes on trial for treason.
  • Werner Heisenberg

    Werner Heisenberg
    He was a German physicist who contributed to quantum theory. He finds the uncertainty principal.
  • Erwin Schrodinger

    Erwin Schrodinger
    An Austrialian physicist who was one of the founders of quantum mechanics. He created the Schrodinger equation which describes how the quantum state changes over time. During 1926, on June 1st, Marylin Monroe is born.
  • James Chadwick

    James Chadwick
    Founder of the neutron. The neutron is a subatomic particle with no electronic charge. Found in the nucleus of an atom. In 1932 on February 26th, Johnny Cash is born.
  • Ernest Rutherford

    Ernest Rutherford
    He was a British-New Zealand chemist and pyhsicist who in 1911 stated atoms have a positive charge in a small nucleus, known as the Rutherford model of the atom. In 1911, on March 25th marks the historic Triangle Shirtwaist Factory Fire.
  • Democritus

    He was an Ancient Greek phiospher who created an atomic theory for the cosmos. A cosmos is an orderky or harmonious system.
  • Aristotle

    He was a Greek philospher who adapted a theory of elements. Fire, Earth, Air, Water, and Aether.