1915-1950

James Chadwick

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(20 October 1891 – 24 July 1974)
United Kingdom
hadwick was born in Cheshire. He graduated from the Honours School of Physics in 1911. He interned during World War 1. After the war he returned to England and returned to school. He obtained his M.Sc. degree in 1913.
In 1932 Chadwick proved the existence of neutrons. He proved that although they had no electric charge; they were still there. Neutrons could assist in other experiments that involved splitting atoms because they didn’t have to overcome the electric fields. The neutrons, devoid of a charge, could pass right through the electric field and split even the heaviest atoms.

Werner Heisenberg
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(5 December 1901 – 1 February 1976)
Germany
He was born in Munich. His father taught the classic languages at a secondary school. He studied phyiscs and mathematics from 1920 to 1923. He started writing a thesis on turbulence before World War 2 and briefly returned to it after World War 2. From 1924 to 1927, he was Privatdozent at Gottingen.
Heisenberg came up with the principle of uncertainty. It says that the determination of the position and momentum of a mobile particle cannot be determined without a certain degree of error. Although, it may be slight error on the human side; they cannot be ignored when studying atoms.

Erwin Schrodinger

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(12 August 1887 – 4 January 1961)
Austria

Schrodinger was born in Vienna, Austria. His father was a botanist and his mother was a chemistry professor. His mother was half-German and half-English. As a result he learned both German and English at the same time. In 1898 he attended the Akademisches Gymnasium. Between 1914 and 1918 he participated in war work as a commissioned officer. In 1920 he became an assistant professor and a full professor in 1921.
In 1926 he published a paper on wave mechanics and developed what is now known as the Schrodinger equation. In this paper he derived the wave equation for time independent systems. He also showed the correct energy eigen values for hydrogen-like atoms.