James Chadwick was born in England on October 20, 1891; he died in the year of 1974. During his years he was an English physicist; he was awarded a Nobel Prize in Physics, for his discovery of the neutron in 1932. James Chadwick was a prisoner of war for 4 years in Germany during World War 1. James was captured by the nazi’s when he was studying beta radiation in Berlin.
He came back to england after being held captive by Germany, James went to college at the University of Cambridge. Where he earned his Doctor of Philosophy degree in June 1921. He was Ernest Rutherford's assistant of research at Cavendish Laboratory, University of Cambridge. University of Cambridge was one of the top centers for the study …show more content…
Resulting in less mass than the atomic number. Rutherford suggested an idea that there could be particle with mass, but no charge; he called it a neutron. Chadwick conducted experiments in Europe, he used for tracking the particle radiation. He repeated his experiments hopefully looking for a neutral particle. One with the same mass as a proton, but with no charge. James’s experiments were successful; he was able to determine that the mass of the neutral radiation was almost exactly the same as a proton.. He used the equation- to find the neutron (PhysicsLAB: Famous Experiments: The Discovery of the Neutron). James proved Rutherford’s “proton-electrons” pair to be wrong; there was no free electrons in the nucleus. He was then later awarded the Nobel Prize for his discovery in 1932. Chadwick's experiment included projecting alpha source particles toward Beryllium "the light element". The emitted particles after enduring the Beryllium target (becomes neutrons) and fall on the paraffin wax.The paraffin wax in turn releases another type of particle (protons). At that time atoms were thought to be made up of protons and electrons (The Experiment - Chadwick Experiment). The particles given off by from Beryllium had no charage and was little larger mass than a proton. Alhpa particlces are helium nucleus emitted by some radioactive substances, known as rays. Shown in the figure on the