Description of four main models of the atom.
Source: Tyler DeWitt/ youtube channel. https://www.youtube.com/user/tdewitt451
Description of Robert Milikan's experiment, which contributed to electron knowledge.
Source: Tyler DeWitt/ youtube channel. http://www.youtube.com/watch?v=2HhaQtvICe8
JJ Thomson and the electron, cathode ray tubes.
Source: Tyler DeWitt/ youtube channel. https://www.youtube.com/watch?v=Rb6MguN0Uj4
Ernest Rutherford, Gold Foil Experiment.
Source: Tyler DeWitt/ youtube channel. https://www.youtube.com/watch?v=dNp-vP17asI
James Chadwick, the neutron
Source: Tyler DeWitt/ youtube channel. http://www.youtube.com/watch?v=_7DAlvRI1M4