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After an elementary introduction on the origin of magnetism, intended for the reader who is not acquainted with the subject, it is shown how the molecular-field hypothesis can account for the magnetic properties of ferromagnetics and antiferromagnetics, and for the noncompensated antiferromagnetics, with which latter…
The problem of armor penetration of thin plates is considered from a quasi-dynamical approach. Equations are derived for the energy dissipation due to plastic deformation and for heating of the projectile target interface. Both the conical and the ogival head are considered in the application of the general equations.
The evidence, from the photoelastic properties of alkali halides and MgO, and from the deviations from the Cauchy relation among the elastic constants in these crystals, for the existence of an appreciable deformation of the charge distribution about the atoms during lattice vibration, is discussed. The deformation of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric Properties of Some AlkylsilanesAubrey P. Altshuller and Louis RosenblumCite this: J. Am. Chem. Soc. 1955, 77, 2, 272–274Publication Date (Print):January 1, 1955Publication History Published online1 May 2002Published inissue 1 January 1955https://pubs.acs.org/doi/1…
J. S. Mills and A. E. A. Werner, J. Chem. Soc., 1955, 3132 DOI: 10.1039/JR9550003132
Data are presented showing that sodium polyphosphates are effective corrosion inhibitors for steel, provided the dissolved oxygen concentration is above a critical minimum. Presence of calcium ion appreciably improves inhibition under all conditions. In solutions containing less than the critical amount of oxygen (1 m…
Abstract When subjected to the effect of ionizing radiation, such as atomic pile radiation or gamma radiation, cellulose is rapidly degraded into a powdery material. A theoretical treatment shows that if the effect of radiation is to cause fracture at random in the main chain, the relation between intrinsic viscosity…
Abstract In the first part of the paper various orientation phenomena of the drawing‐relaxation behavior are interpreted in terms of the changes occurring within the submicroscopic helices which form the spherulites. Not only drawing and relaxation but also the redrawing of the relaxed samples were followed, and it wa…
The corrosion rate of pure iron in deaerated acid media was studied as a function of p H. The rate was found to be essentially independent of p H over the range 1–4 in 4% sodium chloride. Potential and polarization measurements are used to explain this behavior. A method for calculation of corrosion rates from electro…
R. M. Barrer and D. M. MacLeod, Trans. Faraday Soc., 1955, 51, 1290 DOI: 10.1039/TF9555101290
D. H. Everett, Trans. Faraday Soc., 1955, 51, 1551 DOI: 10.1039/TF9555101551
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U. Eisner and R. P. Linstead, J. Chem. Soc., 1955, 3749 DOI: 10.1039/JR9550003749
L. Young, Trans. Faraday Soc., 1955, 51, 1250 DOI: 10.1039/TF9555101250
The energy of a ferromagnetic substance comprises three parts, the exchange, anisotropy and magnetostatic (demagnetizing) energies. These all vary with the state of strain of the substance and so it will deform spontaneously if the deformation reduces the total energy (equal to the sum of the magnetic energy and the e…
The sources and calculation of thermal stresses are considered, together with the factors involved in thermal stress resistance factors. Properties affecting thermal stress resistance of ceramics are reviewed, and testing methods are considered.