Basics of Statistical Physics,by Harald J.W. Müller-Kirsten

Reactor Physics. By R. Schulten and W. Güth. Translated by W. K. Mansfield. In two volumes. (Harrap, 1967.) [Vol. I: pp. viii + 144; Vol. II: pp. vi+ 154.] 22s. 6d. each volume.

Principles of Atomic Spectra. By B. W. Shore and D. H. Menzel. (John Wiley, 1968.) [Pp. xiv + 538.] £8. 18s. 0d.

Les Transitions Electroniques dans les Solides Non Conducteurs. (Colloque de la Société Français de Physique.) (Presses Universitaires de la France, 1967.) [Pp. 177.] 35 F.

Mechanics. Point Objects and Particles. By Terry Triffet. (John Wiley, 1968.) [Pp. ix + 546.] 32s.

Traité ?Électricité Théorique, Vol. IV: Electromagnetism, etc. By Marc Jouguet. (Paris: Gauthier-Villars, 1968.) [Pp. 350.] 94 F.

Modern Physics: An Introductory Survey. By Arthur Beiser. (Addison-Wesley, 1968.) [Pp. ix + 221.] 26s.

Perpetual Motion: Electrons and Atoms in Crystals. By Alec T. Stewart. (Heinemann Educational Books, 1968.) [Pp. x + 146.] 25s.

An Introduction to the Theory of Superconductivity. By C. G. Kuper. (Clarendon Press: Oxford University Press, 1968.) [Pp. vii + 301.] 60s. Scope: Textbook. Level: Postgraduate; Undergraduate.

Progress in High Temperature Physics and Chemistry. Edited by C. A. Rouse. (Pergamon Press, 1968.) [Pp. 176.] 75s.

Ondes dans las Plasmas. By Daniel Quémada. (Paris: Hermann, 1968.) [Pp. 384.] 48 Fr.

Plasmas et Milieux Ionisés. By Evry Schatzman.(Presses Universitaires de la France, 1968.) [Pp. 134.] 16 Fr.

Mechanics. By R. C. Smith and P. Smith. (John Wiley &; Sons, 1968.) [Pp. xviii + 263.] 80s. Scope: Textbook. Level: Undergraduate.

Materials of High Vacuum Technology. Vol. 2: Silicates. By Werner Espe. (Pergamon Press, 1968.) [Pp xxiii + 660.] £16.

Glassblowing for Laboratory Technicians. By R. Barbour. (Pergamon Press, 1968.) [Pp XV + 245.] 40s.

Equilibrium Thermodynamics. By J. C. Adkins. (McGraw-Hill, 1968.) [Pp. xii + 283.] 48s. Scope: Textbook. Level: Undergraduate.

Introduction to Thermodynamics of Irreversible Processes. (Third Edition.) By I. Prigogigne. (John Wiley (Interscience), 1968.) [Pp. xv + 147.] 56s. Scope: Library. Level: Specialist/postgraduate.

Introduction to Physical Statistics. By Bruce R. Lindsay. (Dover Books (Constable), 1968.) [Pp. ix + 306.] 26s. 6d. Scope: Textbook. Level: Undergraduate.

Solid State Physics. An Introduction to its Theory. By H. Clark. (Macmillan, 1968.) [Pp. vii + 239.] 40s. Scope: Textbook. Level: Specialist/postgraduate.

Wave Mechanics. By Gunther Ludwig. (Pergamon Press, 1968.) [Pp. v + 230.] 30s. hard cover; 21s. flexi.

Introduction to Special Relativity. By Robert Resnick. (John Wiley, 1968.) [Pp. x + 226.] 70s.     

A Journey through Statistical Physics. Selecta of Jürg Fröhlich,edited by G. Felder,G.M. Graf and K. Hepp

Current activity in the field of magnetic separation is reviewed in fundamental terms. The diverse subject matter is ordered into four main groupings whose characteristics are described in terms of numerous devices, both of present-day and historical significance. Existing as well as potential areas of scientific and commercial operation are discussed. The basic principles of recent major developments in high intensity magnetic Separation are closely examined.     

Structural and Thermodynamic Properties of M3W3N （M=Fe,Co, Ni）

Ternary transition metal nitrides, Fe3 W3N, Coa W3N, and Nia WaN~ are studied by the use of interatomic potentials acquired from lattice inversion. The study indicates that Fe3 WaN would be more stable than the other compounds in the family of intermetallic tungsten nitrides. The investigation of phonon density of states indi- cates that the lower frequency modes are mostly excited by the metal atoms, and the higher frequency modes are mostly excited by the nitrogen atoms. A qualitative analysis is carried out with the relevant potentials for the phase stability and vibrational modes.     

Characterization of Ni-Containing Goethites by Mössbauer Spectroscopy and Other Techniques

A set of goethite samples from the oxidized level of Vermelho Ni-lateritic deposit was investigated by TEM, XRD, TGA-DTA, FTIR and Mössbauer spectroscopy and compared to a series of synthetic goethite samples, with similar Ni content. Natural Ni-containing goethite presents poor crystallinity and does not incorporate more than about 4 mol% Ni. Natural goethite particles also contain significant amounts of Al and Cr (1.6 and 0.7 mol%, in average, respectively). The wavenumbers of the OH deformation vibration bands -OH (in-plane vibration) and lengthening -OH (out of plane vibration) are coarsely negatively correlated with Ni content. The weight loss during the thermal analysis of synthetic samples shows a good linear relationship with Ni content, pointing to a proton uptake in order to compensate a possible charge imbalance due to a Ni²⁺ for Fe³⁺ substitution. The Mössbauer spectra of Ni-goethite present one sextet whose parameters are in agreement with those usually reported for goethite. The magnitude of the hyperfine field slightly decreases with increasing Ni, while the other parameters remain unchanged. These variations may be explained by Ni incorporation, but also by differences in the crystallinity. The effect of the low Ni concentration in our samples was a weak to medium correlation of the analytical signals with the Ni content in goethite, but when considered together, the results indicate that isomorphic substitution is occurring.     

Synthesis,Structure, and Thermal Properties of the YVO4–BiVO4 Oxides

Physics of the Solid State - The Y0.4Bi0.6VO4 and Y0.6Bi0.4VO4 solid solutions two-phase at xBi = 0.95, 0.90, and 0.80 have been formed by the solid-phase synthesis from the initial Y2O3, Bi2O3,...     

‘Factors of ignorance’ and the rationalized M.K.S.A. system of units

An attempt is made, by means of an allusive (rather than a systematic) historical account of the development of the subject, to exhibit the essentially unique character of the rationalized M.K.S.A. system of units. The establishment of this system involved one arbitrary decision—the determination to retain unaltered the size of the previously accepted unit of current. Thereafter, any choice of derived units, other than the choice actually made, would have destroyed the basic symmetry of the formulation.