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James Chadwick: Contribution to the Atomic Theory
Oct 20, 1891 - July 24, 1974
Bollington, Cheshire
He accidentally took Physics at the University of Manchester (1908); he wanted to study Mathematics.
He met Lord Ernest Rutherford, head of the Physics Department.
"Father of Nuclear Physics"
He was impressed by his knowledge
Chadwick gained his Master's under Rutherford's Supervision
Comparing the amount of Radioactive energy of two different sources
World War 1: Prisoner with a makeshift lab
1918 - 1919 : returned to England and continued his research with Rutherford
In 1921, he earned his Doctorate in Philosophy
He was born in a low class family and rose to become one of the most famous scientist in Britain
He was able to finished his studies with the help of scholarships
Married Aileen Stewart-Brown in 1925 and had twin daughters
Erwin Schrödinger: Quantum Mechanical Model of the Atom
experiment
The probability of the location of an electron is determined; in contrast to Rutherford's model where the exact path of an electron is defined.
1919: He discovered Protons and Electrons; even the nucleus. However, there because of the great difference of the atomic number and the atomic mass he concluded that there is more
He asked Chadwick to look into evidences to prove his theory
By bombarding Beryllium with alpha particles, he discovered that it emitted a strong radiation.
contribution
Neutrally charged and has the same approximate mass of a proton!
Neutron
Chadwick's discovery caught the attention of the government
Military Application of Uranium Detonation (MAUD) Committee was formed with Chadwick as one of the members.
MANHATTAN PROJECT
aftermath
Hiroshima and Nagasaki Atomic Bombing
awards