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"Uber den Bau der Atomkerne I" (Zeitschrift für Physik 77 pp. 1 ? 11, 1932). "Uber den Bau der Atomkerne II" ( Zeitschrift für Physik 78 pp. 156 - 164, 1932). "Uber den Bau der Atomkerne III" (Zeitschrift für Physik 80 pp. 587 - 596, 1933)
 First editions of the three papers in which Heisenberg formulated the final mathematical model of the atom -- the neutron-proton model for the atomic nucleus ? and the papers in which he introduced the concept of nucleon isotropic spin (later named \"isospin\").  The books bear the stamp of Friedrich Hermann Hund, a German  physicist well-known for his work on atoms and molecules. \"After Chadwick had discovered the neutron, Heisenberg was the first to state that this discovery eliminated the need for assuming the presence of electrons in the nucleus of an atom? (Pais).  The discovery of the neutron by Chadwick threw wide open the door to nuclear physics.  Chadwick?s discovery ?made it possible to change the relation between nuclear physics and the domain of unsolved problems. A substantial number of nuclear problems now became solvable by ordinary quantum mechanics? (ibid).?Only a few months later, in 1932, Heisenberg used Chadwick?s neutron to construct the first quantum mechanical nuclear model.  The main mechanism he proposed was an exchange force produced by protons and neutrons passing electrons around like basketball players tossing a ball? (Peacock, The Quantum Revolution, 94). Heisenberg postulated that the proton and neutron were two states of the same particle, the nucleon, differing only in isospin. In his theory, the nuclear force conserved isospin, which accounted for the similarities between protons and neutrons.  Other forces, such as electromagnetism, broke isospin symmetry, which explained the nucleons\' differences.  Heisenberg was wrong about the nature of the proton and neutron, but was correct about the importance of isospin in the weak nuclear force. CONDITION & DETAILS: 3 volume 8vo.  (9 x 6.5 inches; 225 x 163mm).  The books bear the stamp (on ffp) of Friedrich Hermann Hund, a German  physicist well-known for his work on atoms and molecules. Friedrich Hermann Hund (1896-1997) ?was a German physicist from Karlsruhe known for his work on atoms and molecules.  Hund worked with such prestigious physicists as Schrödinger, Dirac, Heisenberg, Max Born, and Walter Bothe. He published more than 250 papers and essays in total. Hund made pivotal contributions to quantum theory - especially concerning the structure of the atom and of molecular spectra? (Wikipedia).   BINDING & INTERIOR: Bound in black cloth over marbled paper hardboard.  The set is ex-libris with slight ?ghosting? from the removal of spine labels (see picture).  Small stamp appears on the rear of the title pages. Very slightly rubbed at the edges.  Tightly bound and very clean.  The interior is clean and bright.  Very good + condition.  
      [Bookseller: Atticus Rare Books]
Last Found On: 2013-01-03           Check availability:      Biblio    

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