eugene paul wigner (47 Ergebnisse)

Zustand: Very Good. Very Good condition. Good dust jacket. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp.

Zustand: Fine. *Price HAS BEEN temporarily REDUCED by 10% until Monday, Sept. 8 (sale item)* 280 pp., Paperback, fine. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.

Taschenbuch. 145 S. Einband gering vergilbt u. geknickt, Kanten etw. bestoßen SL03 *.* Sprache: Deutsch Gewicht in Gramm: 240.

kart. VI, 145 S. ; 8 Sprache: Deutsch Gewicht in Gramm: 400.

Zustand: New. pp. 650 Figure, 49:B&W 6.14 x 9.21 in or 234 x 156 mm (Royal 8vo) Perfect Bound on White w/Gloss Lam.

Zustand: Good. Former library book; may include library markings. Used book that is in clean, average condition without any missing pages.

Paperback. Zustand: Like New. First Edition. Bright and clean, firm and square, just a few very minor rubs and bumps. Hence a non-text page is stamped 'damaged'. Despite such this book is actually in nearly new condition. Thus it looks and feels unread with contents that are crisp, fresh and tight. Now offered for sale at a special bargain price.

Paperback. Zustand: Brand New. 92 pages. 8.25x5.75x0.25 inches. In Stock.

Zustand: Fine. *Price HAS BEEN temporarily REDUCED by 10% until Monday, Sept. 8 (sale item)* 574 pp., hardcover, fine. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.

Zustand: Fine. *Price HAS BEEN temporarily REDUCED by 10% until Monday, Sept. 8 (sale item)* 808 pp., Hardcover, previous owner's name to front free endpaper else fine. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.

Zustand: very good. Gut/Very good: Buch bzw. Schutzumschlag mit wenigen Gebrauchsspuren an Einband, Schutzumschlag oder Seiten. / Describes a book or dust jacket that does show some signs of wear on either the binding, dust jacket or pages.

Hardcover. Zustand: Very Good. Zustand des Schutzumschlags: Good. "Expanded and improved edition" (title page). 372 pages : illustrations. A very good copy, despite its distinct mustiness. Binding fresh, corners sharp, small dent to foot of front panel; offsetting to endpapers, previous owner's name to head of front free endpaper, contents mildly age-toned but clean and attractive. The dust jacket shows wear at flapfolds, with annotations in ink at rear flap. 770 grams.

Zustand: New. In.

Hardcover. 536 S. Ex-library with stamp and library-signature in good condition, some traces of use. C-01358 3540569863 Sprache: Englisch Gewicht in Gramm: 1050.

Hardcover. Ex-library with stamp and library-signature in good condition, some traces of use. C-01362 3540565604 Sprache: Englisch Gewicht in Gramm: 1050.

Hardcover. 536 S. Ex-library with stamp and library-signature in good condition, some traces of use. C-01363 3540572937 Sprache: Englisch Gewicht in Gramm: 1050.

Hardcover. Ex-library with stamp and library-signature in good condition, some traces of use. C-01370 3540553436 Sprache: Englisch Gewicht in Gramm: 1050.

Hardcover. 536 S. Ex-library with stamp and library-signature in good condition, some traces of use. C-01349 3540572953 Sprache: Englisch Gewicht in Gramm: 1050.

Zustand: New. This is a Brand-new US Edition. This Item may be shipped from US or any other country as we have multiple locations worldwide.

Zustand: New. In.

Hardcover. Zustand: Fine. Leichte Risse.

Softcover. Zustand: As New.

XI, 631 S. Gr 8° Ln.

First edition. PARITY AND TIME-REVERSAL IN QUANTUM MECHANICS. First edition, very rare offprints, of these two fundamental papers in quantum mechanics, the "invention of spatial parity as a quantum mechanical conserved quantity [I] [and the] introduction of the time inversion transformation in quantum mechanics [II]" (). "Wigner was invited to Göttingen in 1927 to become Hilbert's assistant. Hilbert, already interested in quantum mechanics, felt that he needed a physicist as an assistant to complement his own expertise. This was an important time for Wigner who produced papers of great depth and significance, introducing in his paper 'On the conservation laws of quantum mechanics' (1927) [I] the new concept of parity" (). "Wigner performed pioneering work by studying such symmetries in the laws of motion for the electrons and had made important discoveries by investigating e.g., those symmetries which express the fact that the laws mentioned make no difference between left and right and that backward in time according to them is equivalent to forward in time. These investigations were extended by Wigner to the atomic nuclei at the end of the 1930s and he explored then also the newly discovered symmetry property of the force between two nucleons to be the same whether either of the nucleons is a proton or a neutron. This work by Wigner and his other investigations of the symmetry principles in physics are important far beyond nuclear physics proper. His methods and results have become an indispensable guide for the interpretation of the rich and complicated picture which has emerged from recent years' experimental research on elementary particles" Presentation speech for Wigner's Nobel Prize). "Wigner was a member of the race of giants that reformulated the laws of nature after the quantum mechanics revolution of 1924-25. In a series of papers on atomic and molecular structure, written between 1926 and 1928, Wigner laid the foundations for both the application of group theory to quantum mechanics and for the role of symmetry in quantum mechanics" (David J. Gross, 'Symmetry in Physics: Wigner's legacy,' Physics Today, December 1995, pp. 46-50). Wigner was awarded the Nobel Prize in Physics in 1963 "for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles." "Nearly a decade after he was awarded the Nobel Prize, Wigner's early group theory research was described as so farsighted that it was not immediately recognized for its importance as a pioneering advance in mathematical physics The parity law states that particles emitted during a physical process should emanate from the left and right in equal numbers or equivalently that a nuclear process should be indistinguishable from its mirror image. The parity concept was not challenged until 1956 when it was disproved in certain so-called 'weak decay' interactions in experiments by Tsung-Dao Lee of Columbia and Chen-Ning Yang of Princeton. Lee and Yang were awarded the Nobel Prize in 1957 for their empirical refutation of Wigner's parity theory in this special case. The theory however remained substantially intact and along with other of Wigner's discoveries useful as a further guide in nuclear research" (DSB). "It is scarcely possible to overemphasize the role played by symmetry principles in quantum mechanics" (C. N. Yang, Nobel Lecture, p. 394). No copies on OCLC or RBH. Provenance: I. Felix Bloch (1905-83), Swiss-American physicist who shared the 1952 Nobel Prize for Physics with Edward Purcell for "their development of new ways and methods for nuclear magnetic precision measurements" ('Bloch' written in ink on front wrapper). II. Ralph Kronig (1904-95), German physicist who first put forward the concept of electron spin ('Kronig' written in pencil on front wrapper). The concept of parity refers to the behavior of classical and quantum systems under the 'inversion' operation, which takes a point in three dimensions with Cartesian coordinates x, y, z to the point with coordinates x, y, z (more generally, this can be any 'linear transformation' that is not a rotation, for example the 'mirror reflection' that takes x, y, z to x, y, z). Symmetry under inversion, or reflection, was used in classical physics, but was not of any great practical importance there. One reason for this derives from the fact that right-left symmetry is a discrete symmetry, unlike rotational symmetry which is continuous. In a famous paper in 1918, Emmy Noether showed that continuous symmetries always lead to conservation laws in classical physics but a discrete symmetry does not. With the introduction of quantum mechanics, however, this difference between discrete and continuous symmetries disappears. Wigner was led to his study of parity by work of Otto Laporte in 1924. Laporte studied the structure of the spectrum of iron and found that there are two kinds of energy levels, which he called 'stroked' ('gestrichene') and 'unstroked' ('ungestrichene'). He discovered a selection rule (later called Laporte's rule) that the transitions occurred always from stroked to unstroked levels or vice versa, and never between stroked or between unstroked levels. A few months later similar observations on the spectrum of titanium were made by Henry Norris Russell. No convincing explanation of the existence of two types of levels was found within the framework of the old quantum theory. In 1927, Wigner analysed Laporte's finding and showed that the two types of levels and the selection rule followed from the invariance of the electromagnetic forces in the atom under the operation of inversion of coordinates. This led him quickly to the idea of parity conservation in quantum mechanics. He wrote, 'But that was very easy. I knew the spectroscopic rules, and Laporte's rule was similar to the theory of inversion'. Wigner introduced the parity operator, and parity conservation, forma.

Printed scientific article signed, twelve pages, 6 x 9 inch, scientific article entitled `The Physical Sciences` by Eugene P. Wigner, reprint from `The Search For Absolute Values: Harmony Among The Sciences` - ICUS 1977, signed and inscribed on the first page in pencil "Auch hiermit, - Grüsse - E P Wigner"*, with very mild signs of wear - in nearly very fine condition. * Translated:"Herewith too, greetings - E P Wigner".

Wigner, Eugene Paul (1902-95). Archive of correspondence between Wigner and historian of physics Jagdish Mehra (1931-2008). 75 letters and other pieces, comprising ca. 135 pages. Oct. 14, 1969 Aug. 31, 1989. Archive includes original autograph and typed letters signed, carbon typescripts and a few photocopies. Very good. Complete calendar of archive available on request. A large group of correspondence between Nobel laureate Eugene Wigner, who received a share of the 1963 Nobel Prize in physics for his discovery and application of fundamental principles of symmetry to the theory of atomic nuclei particles, and historian of physics Jagdish Mehra, editor of Wigner's Philosophical Reflections and Syntheses (1995) and The Collected Works of Eugene Paul Wigner (1993), and author of The Historical Development of Quantum Theory (1982-2002) and many other works. The correspondence includes 44 typed or autograph letters / notes signed from Wigner to Mehra, plus carbons of Mehra's responses, a few of Mehra's drafts of letters to Wigner, and related material. The letters deal primarily with the organization of scientific conferences; several are devoted to the symposium "The Physicist's Conception of Nature," held in Trieste in 1972 in honor of Paul Dirac's 70th birthday, which Mehra organized and Wigner co-chaired. Other letters touch on Wigner's retirement in 1971 and Mehra's proposal to edit Wigner's collected papers. Also included in the archive is an undated autograph document in Wigner's hand, headed "Classical expression for Helmholtz function." The Hungarian-born Wigner was a key player in the development of quantum and nuclear physics. He introduced the idea of parity as a conserved property of nuclear reactions (1927); developed (with his friend John von Neumann) the theory of energy levels in atoms on the basis of group theory (1928-32); devised the "Wigner function" of momenta and coordinates (1932), which has become a major tool in the study of quantum chaos; provided (with his student Frederick Seitz) a basis for solid state physics in their method of treating electron wave functions in a solid (1933); and worked out with Gregory Breit the "Breit-Wigner" formula (1936) explaining neutron absorption by a compound nucleus. He also played an important role in the United States' development of the atomic bomb and nuclear reactors, working on the Manhattan Project during World War II and serving as director of the AEC Laboratory at Oak Ridge in 1946-47. .