atomic theory

  • JJ Thompson cathode ray tube

    Thompson discovers electron and its negative charge
  • Ernest Rutherford gold foil experiment

    Ernest Rutherford disproved the plum pudding model which said that mass and positive charge of the atom are almost uniformly distributed.
  • louie broglie 1924

    He suggests that electons have wavelike properties.
  • Erwin Schodinger

    He states his nonrelativistic quantum wave equation and forms quantative wave mechanics.
  • Heisenberg and bohr uncertainty principle

    In 1927 in copenhagen Neils bohr and Werner heisenberg find out the uncertainty principle.