On September 10, 1983, the famous Swiss physicist and Nobel laureate Felix Bloch passed away

Bloch was a physicist who had made great contributions to both modern physical theory and experimentation; he independently observed and measured nuclear magnetic resonance, first discovering the phenomenon of nuclear magnetic resonance; and his other most important and contributing work was the theory of solid energy bands. This theory is one of the most important applications in the field of science and technology in recent decades, the supporting theory of semiconductor technology, and it is also the basic theory of condensed matter physics, the most important branch of physics.

His doctoral thesis , " Conduction Theory of Metals " , is a valuable scientific document that provides modern images of metal and insulator structures and is the theoretical basis for semiconductor research. His name is mentioned many times in solid state physics, such as: the so-called Bloch equation, the Bloch wave function, the Bloch spin wave, the Bloch wall, as well as the Bloch effect when ferromagnetic matter is magnetized, the Bloch T3/2 law of spontaneous magnetization, etc. are all created by him.

Felix Bloch was born in Zurich, Switzerland in 1905.

After finishing secondary school, he wanted to become an engineer, so he went straight to the Federal University of Technology in Zurich.

A year later, he decided to transfer to physics, and through the courses taught by Schrödinger and Debye, he gradually became familiar with quantum mechanics.

Later he went to the University of Leipzig in Germany to continue his research with Heisenberg. He has written papers on the quantum mechanics of electrons in crystals and the theory of metal conductivity. He received his doctorate in 1928.

Bloch's theorem: First proposed by Bloch in 1928 when studying the conductivity of crystalline solids.

In 1933, after Hitler came to power, he left Germany because he was Jewish.

After coming to the United States, he taught at Stanford University.

He became a U.S. citizen in 1939.

In 1945, In a letter to the Physical Review, The phenomenon of nuclear magnetic resonance observed in condensed matter was first reported, and Bloch also independently observed and measured mrivisibility, and Bloch proposed his method of measuring nuclear magnetic moments with high precision: the "nuclear induction" method, the mathematical formula of which is called the "Bloch equation". A month later, Bloch also published a paper in the journal Physical Review on "Nuclear Induction," reporting on the NMR signals in water observed by the Stanford team, with a mathematical formula known as the "Bloch equation."

He and Edward Purcell won the 1952 Nobel Prize in Physics.

In 1954 he was the first Director of CERN.

After returning to Stanford University, he studied superconductivity and other phenomena at low temperatures.

Bloch died in Munich on 10 September 1983 at the age of 78.

Felix Bloch (23 October 1905 – 10 September 1983) was a Swiss physicist.

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