Atomic structure

History Of The Atomic Structure

By Natrluc
  • Period: to

    Atomic Structure History

  • "Skeptic Chemist"

    "Skeptic Chemist"
    Robert Boyle wrote a book titled the “Skeptic Chemist” which persuaded chemists to abandon the view that the elements are mythical things.
  • Robert Boyle

    Robert Boyle
    Robert Boyle discovered that air is required for combustion, respiration, and sound.
  • Isaac Newton

    Isaac Newton
    Constructed a mechanical universe that had small particles in motion.
  • John Dalton

    John Dalton
    John Dalton stated that atoms can be neither created nor destroyed.
  • Dalton's idea

    Dalton suggested that the substances around us are made of a grouping of a specific number of atoms of different elements.
  • Amadeo Avogadro

    Amadeo Avogadro
    Avogadro confirmed the idea that atoms of different elements joined in simple ratios form compounds.
  • J. Plucker

    J. Plucker
    Plucker built the first gas discharge tube.
  • James Clerk Maxwell

    James Clerk Maxwell
    James projected that electric and magnetic fields filled the void.
  • William Crookes

    William Crookes
    Crookes developed the vacuum pump which allowed him to cathode ray tubes with a smaller residual gas pressure.
  • E. Goldstein

    E. Goldstein
    Goldstein used a CRT to study ‘canal rays’.
  • Henri Becquerel

    Henri Becquerel
    Becquerel discovered that some chemicals randomly decompose and give off very penetrating rays.
  • J.J. Thompson

    J.J. Thompson
    Constructed the Raisin Pudding Model that showed that matter is electrically neutral and that electrons are much lighter than atoms.
  • R.A. Millikan

    R.A. Millikan
    An oil drop experiment determined the charge and the mass of an electron.
  • Ernest Rutherford

    Ernest Rutherford
    Rutherford proposed the name ‘proton’ for the positively charged particles of the nucleus.
  • Cockcroft and Walton

    Cockcroft and Walton
    Cockroft and Walton built an early linear accelerator and bombarded lithium with protons to produce alpha particles.
  • Paul Dirac

    Paul Dirac
    Dirac proposed anti-particles.
  • James Chadwick

    James Chadwick
    Using alpha particles Chadwick discovered a neutral atomic particle in the nucleus with a mass almost the same as a proton. Thus the neutron was discovered.
  • Enrico Fermi

    Enrico Fermi
    Enrico conducted the first controlled chain reaction by releasing energy from the atoms nucleus.