James Chadwick

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James Chadwick

James Chadwick was born on October 20th, 1891. He graduated from the Manchester University Honours School of Physics in 1911, and studied under Nobel Laureate Ernest Rutherford for two years in Manchester. With Rutherford, he studied the atomic structure and properties of the nucleus. He married Aileen Stewart-Brown in 1925. Chadwick had hypothesized that a subatomic particle with a neutral charge existed. Eventually, his studies lead him to prove the existence of the neutron. In his experiments, he used a tube containing beryllium and polonium and directed the radiation at paraffin wax in order to isloate neutrons. He published his discovery of the neutron in 1932. Not-so-Fun Fact: Since he was a British national working in Berlin, Germany at the beginning of World War I, he was a prisoner of war for the entire war.


1891 - Born1911 - Graduated from Manchester University1932 - Discovered the neutron1945 - Knighted1974 - Died

James Chadwick discovered the neutron, which was was one of the most important scientific developments of the 20th century. He also worked on the Manhattan Project, which developed nuclear weapons.

Lasting Impact


James Chadwick


Chadwick's discovery of the neutron resolved the mystery surrounding the arrangement of subatomic particles within the atom. His work extended to the development of nuclear fission and he worked on the Manhattan Project. Therefore, his work contributed to nuclear bombs and also nuclear energy. His work also made it possible for scientists to create elements heavier than Uranium.


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