Rutherford Gold Foil Experiment: The evidence for the existence of the nucleus has been provided by Rutherford’s Experiment which he carried out in 1911. In his experiment, he bombarded a thin gold foil with a beam of alpha particles (particles carrying two units of positive charge and four units of mass) and observed their behavior with the help of a screen coated with zinc sulfide. Whenever an alpha particle struck the screen, a tiny flash of light appeared at the point of contact. He found that most of the alpha particles passed very nearly straight through the foil and struck … Continue reading Rutherford Gold Foil Experiment- Discovery of Nucleus