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James Chadwick

Published on Nov 20, 2015

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James Chadwick

Preston Davis & Dakota Martin
Photo by Sarah G...

who he was

  • Sir James Chadwick, CH, FRS was an English physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932.

where he worked

  • assistant director of the lab in cambridge university

when he started working

  • he started after he was freed as a prisoner from germany in world


Photo by BudCat14/Ross


He was able to determine that the neutron did exist and that its mass was about 0.1 percent more than the proton's.

Tracked particle Radiation

repeated Frederic and Irene Joliot-Curie experiment
Photo by CIMMYT


Half of mass
makes isotopes