BLOCH, FELIX


BLOCH, FELIX
BLOCH, FELIX (1905–1983), U.S. physicist and Nobel Prize laureate. Bloch was born in Zurich. He studied first at the Federal Institute of Technology, where his interest in physics developed and he received his Ph.D. in theoretical physics under Heisenberg's supervision at the University of Leipzig (1928). He worked successively with leading contemporary physicists including Pauli, bohr , and Fermi before emigrating to the U.S. in 1933 after the Nazi rise to power. He joined Stanford University (1934), where he was Max Stein Professor of Physics from 1961. He served for one year (1954) as the first director general of CERN. Bloch's research interests started with his doctoral dissertation on the quantum mechanics of electrons in crystals. During World War II he worked on theoretical issues in the early stages of the Manhattan Project and on counteracting radar. He was awarded the Nobel Prize in physics (1952) jointly with E.M. Purcell for his discovery of nuclear induction. This process uses a magnetic field to align nuclear particles on the basis of their intrinsic angular moment (spin) and magnetic moment parallel to this spin. The resulting signals, analogous to radio-frequency spectroscopy, enabled him to measure the moment of the neutron with great accuracy. This discovery forms the basis of nuclear magnetic resonance scanning in medicine and related techniques for analyzing other solid structures. In his later years Bloch worked on the theory of superconductivity at low temperatures. (Michael Denman (2nd ed.)

Encyclopedia Judaica. 1971.

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  • Bloch, Felix — born Oct. 23, 1905, Zürich, Switz. died Sept. 10, 1983, Zürich Swiss born U.S. physicist. He emigrated to the U.S. in 1933 and taught at Stanford University (1934–71). He worked on atomic energy at Los Alamos and on radar countermeasures at… …   Universalium

  • Bloch , Felix — (1905–1983) Swiss–American physicist Bloch was born in Zürich, Switzerland, and educated at the Federal Institute of Technology there and at the University of Leipzig, where he obtained his PhD in 1928. He taught briefly in Germany and in 1933… …   Scientists

  • Bloch, Felix — (1905–1983)    US physicist and Nobel laureate, 1952. Born in Switzerland, Bloch graduated from the University of Leipzig in 1928 and worked with such renowned scientists as Carl Heisenberg, Niels BOHR and Enrico Fermi. During these years he made …   Who’s Who in Jewish History after the period of the Old Testament

  • Bloch, Felix — (1905 83)    Swiss American physicist. Born in Zurich, he studied engineering at the Swiss Federal Institute of Technology. With the rise of Hitler, he settled in the US and took up a position at Stanford University. During World War II he was… …   Dictionary of Jewish Biography

  • Bloch, Felix — ► (1905 83) Físico suizo. Fue premio Nobel de Física en 1952, compartido con E. M. Purcell, por el descubrimiento del método de las resonancias nucleares para el estudio del núcleo atómico. * * * (23 oct. 1905, Zurich, Suiza–10 sep. 1983, Zurich) …   Enciclopedia Universal

  • Bloch — Felix …   Scientists

  • Felix Bloch — Félix Bloch Pour les articles homonymes, voir Bloch. Felix Bloch. Felix Bloch (23 o …   Wikipédia en Français

  • Bloch-Sphäre — Bloch Kugel Die Bloch Kugel wird in der Quantenmechanik verwendet, um Zustände von Qubits grafisch darzustellen. Benannt wurde sie nach dem Physiker Felix Bloch, der diese übersichtliche Illustration für Überlagerungen von Zuständen entwickelte.… …   Deutsch Wikipedia

  • Bloch — Bloch, Conrad E. Bloch, Ernest Bloch, Ernst Bloch, Felix Bloch, Marc * * * (as used in expressions) Bloch, Ernest Bloch, Felix Bloch, Marc (Léopold Benjamin) Marcel Bloch …   Enciclopedia Universal

  • BLOCH (F.) — BLOCH FELIX (1905 1983) Physicien suisse, naturalisé américain (1939), professeur à l’université de Stanford (Ca.), prix Nobel de physique (avec E. M. Purcell, 1952), Bloch a effectué de nombreux travaux théoriques et parfois expérimentaux, en… …   Encyclopédie Universelle


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