James+Chadwick;

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Name: James Chadwick Birth: October 20, 1891 Death: July 24, 1974 Country of Origin: Cheshire, England
 * Date of Discovery: 1932**

James Chadwick was born in Cheshire, England, on October 20, 1891. He went to Manchester High School and University of Manchester for college. He graduated with high honors in physics and spent the next two years out of college studying under Rutherford, another highly important scientist who changed this history of the atom forever. In 1851 Chadwick was awarded the 1851 Exhibition Scholarship for all his hard work and discoveries. After WWI he went to Gonville and Caius College, Cambridge and continued to work under Rutherford. With the assistance to Chadwick, Rutherford discovered and named alpha and beta radiation. Chadwick focused on radioactivity. The two of them worked together and discovered atomic disintegration. With their experiments, it seemed that something besides the protons in the nucleus was adding to the mass. Unfortunately he did not know what this was. After more experiments he finally figured it out. He was able to determine that the neutron did exist and that its mass was about 0.1 percent more than the proton's. He was awarded the Nobel Prize in 1935 for his discovery of Neutrons.



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