James+Chadwick+b5

__**
 * __James Chadwick!

([])
 * James Chadwick** was born in Cheshire, England, on 20th October, 1891, the son of John Joseph Chadwick and Anne Mary Knowles. He attended Manchester High School prior to entering Manchester University in 1908; he graduated from the Honours School of Physics in 1911 and spent the next two years under [|Professor (later Lord) Rutherford] in the Physical Laboratory in Manchester, where he worked on various radioactivity problems

In 1932, Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of //neutrons// - elementary particles of any electrical charge. In contrast with the helium nuclei, which are charged, and therefore repelled by the considerable electrical forces present in the nuclei of heavy atoms, this new tool in atomic disintegration need not overcome any electric barrier and is capable of penetrating and splitting the nuclei of even the heaviest elements. Chadwick in this way prepared the way towards the fission of uranium 235 and towards the creation of the atomic bomb. For this epoch-making discovery he was awarded the Hughes Medal of the Royal Society in 1932, and subsequently the Nobel Prize for Physics in 1935 ([])

He remained at Cambridge until 1935 when he was elected to the Lyon Jones Chair of Physics in the University of Liverpool. From 1943 to 1946 he worked in the United States as Head of the British Mission attached to the Manhattan Project for the development of the atomic bomb. ([])

Since his discovery, scientist have concluded that neutrons are made up of electrons, protons, and other substances that has no net electric charge.

Brooke Padgett b5