Fritz Reiche (July 4, 1883 – January 14, 1969) was a German physicist, a student of

Max Planck Max Karl Ernst Ludwig Planck (, ; 23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918. Planck made many substantial contributions to theoretical p ...

and a colleague of

Albert Einstein Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theory ...

, who was active in, and made important contributions to the early development of

quantum mechanics Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistr ...

including co-authoring the Thomas-Reiche-Kuhn sum rule. Fritz Reiche was born in 1883 in Berlin, Germany. In 1901 and 1902, he attended the

University of Munich The Ludwig Maximilian University of Munich (simply University of Munich or LMU; german: Ludwig-Maximilians-Universität München) is a public research university in Munich, Germany. It is Germany's sixth-oldest university in continuous operatio ...

and he attended the

University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative ...

from 1902 to 1907, where he received his PhD. From 1913 to 1920 as privatdozent he worked and taught under Planck in Berlin. Reiche published more than 55 scientific papers and books including ''The Quantum Theory''. He became a professor in 1921 at the

University of Breslau A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, th ...

and then was dismissed as a Jew from his academic position in 1933. Eventually, with the help of

Ladenburg Ladenburg is a town in northwestern Baden-Württemberg, Germany. It lies on the right bank of the river Neckar, northwest of Heidelberg and east of Mannheim. The town's history goes back to the Celtic and Roman Ages, when it was called Lopo ...

, Einstein, and the

Emergency Committee in Aid of Displaced Foreign Scholars An emergency is an urgent, unexpected, and usually dangerous situation that poses an immediate risk to health, life, property, or environment and requires immediate action. Most emergencies require urgent intervention to prevent a worsening ...

, Reiche emigrated with his family to the United States in 1941 and went on to work with

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...

and the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

on projects related to supersonic flow.

References

External links

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1883 births 1969 deaths 20th-century German physicists 20th-century American physicists University of Breslau faculty Jewish emigrants from Nazi Germany to the United States {{germany-physicist-stub