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J.J Thompson
Born December 18 , 1856
Died August 30, 1940 Had two kids
Went to : University of Cambridge, Trinity College, Cambridge, University of Manchester, Victoria University of Manchester
suggested a model of the atom as a sphere of positive matter in which electrons are positioned by electrostatic forces. -
Robert Mllikan
Born March 22, 1868
Died: December 19, 1953 Had three kids
determination of the charge carried by an electron, using the elegant "falling-drop method"; he also proved that this quantity was a constant for all electrons (1910), thus demonstrating the atomic structure of electricity. was an American experimental physicist -
Ernest Rutherford
Born August 30, 1871,
Died: October 19, 1937 one of the most illustrious scientists of all time
publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space -
James Chadwick
October 20, 1891,
Died: July 24, 1974,
Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of neutrons
