James Chadwick Atomic model

PictureChadwick had an abundance of knowledge he had gained from previous discoveries, which help him discover the neutron. In 1932, Chadwick carried out an experiment in which a sample of Beryllium was bombarded with alpha particles, which caused it to emit this mysterious radiation. He assumed it was gamma rays. He then discovered that this radiation, upon striking Paraffin Wax, would dislodged some of the protons, coming to the conclusion it was gamma rays. Chadwick, however did not believe that gamma rays could account for the protons from the wax. He was convinced that the beryllium was emitting neutrons.

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