Timeline of Atom Development

  • John Locke

    John Locke
    1) Father of Liberalism
    2) He was a co-founder of social contract theory
    3) English philosopher and physician
    4) One of the great influential minds of the Enlightment period of Western Civilization.
    5) He also influenced the fields of epistemology and political philosophy.
  • Robert Hooke

    Robert Hooke
    1) He was born on 28 July 1635 in Freshwater, Isle of Wight, England.
    2) His fields of expertise lay in Physics and chemistry.
    3) He gained great wealth and standing through his reputation for hard work and total honesty following the great fire of London in 1666.
    4) He is known for Hooke's law, a measuremnt theory for the measurment of elasticity.
    5) He died on 3 March 1703 in London, England.
  • John Dalton

    John Dalton
    1) He was a British scientist.
    2) He was a Quaker.
    3) He said that different elements' atoms can combine in set ratios to produce new compounds.
    4) He concluded that the atoms themselves could not be separated or created.
    5) His most important contributions is also his work on the principles of volumetric analysis.
  • JJ Thomson

    JJ Thomson
    1) He said that atoms could be cut in half.
    2) He discovered electrons.
    3) His atomic model ws the electron cloud model.
    4) He wrote Motion of Vortex Rings.
    5) He believed that the center of an atom had a positive core filled with negatively charged particles.
  • Ernest Rutherford

    Ernest Rutherford
    !) Rutherford worked on radioactivity.
    2) He observed that radioactive material took the same amount of time for half of it to decay, known as its “half life”.
    3) His model of the atom was simplified in a well known symbol showing electrons circling around the nucleus like planets orbiting the sun.
    4) Rutherford was awarded the Nobel Prize in Chemistry for his work on the transmutation of elements and the chemistry of radioactive material.
    5) "Rutherfordium' was named in Rutherford’s honor.