Electrolytic polarisation—I. The overpotential of hydrogen on some less common metals at high current densities. Influence of current density and time
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Stress Induced Preferential Orientation of Pairs of Solute Atoms in Metallic Solid Solution
In a non-stressed cubic crystal the axes of pairs of adjacent solute atoms are randomly orientated along the several permissible crystallographic directions. It is shown that in the presence of a stress the equilibrium orientation is no longer random, but that certain directions become preferred, and it is further sho…
Solubilities of ammonium and potassium alums in water - Densities of the Saturated Solutions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubilities of ammonium and potassium alums in water - Densities of the Saturated SolutionsDavid Schlain, John D. Prater, and S. F. RavitzCite this: Ind. Eng. Chem. 1947, 39, 1, 74–76Publication Date (Print):January 1, 1947Publication History Published online1 May 2002Publi…
THE CATALYTIC ACTION OF ALUMINIUM SILICATES: I. THE DEHYDRATION OF BUTANEDIOL-2,3 AND BUTANONE-2 OVER ACTIVATED MORDEN BENTONITE
The dehydration of butanediol-2,3 over activated Morden bentonite has been investigated. Below 350 °C., liquid products butanone-2, isobutyraldehyde, and the isobutyral of butanediol-2,3 were produced. Butanone-2 was obtained in 86% yield. At higher temperatures, 450° to 700 °C., gaseous decomposition occurred. Only s…
72. The crystal structure of pyrene. A quantitative X-ray investigation
J. M. Robertson and J. G. White, J. Chem. Soc., 1947, 358 DOI: 10.1039/JR9470000358
PEROXIDE-CATALYZED ADDITION OF TRICHLOROSILANE TO 1-OCTENE
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPEROXIDE-CATALYZED ADDITION OF TRICHLOROSILANE TO 1-OCTENEL. H. Sommer, E. W. Pietrusza, and F. C. WhitmoreCite this: J. Am. Chem. Soc. 1947, 69, 1, 188Publication Date (Print):January 1, 1947Publication History Published online1 May 2002Published inissue 1 January 1947https…
Derivative Crystal Structures
There exists a class of crystal structures which are derived from others by generalization. These are here designated derivative structures. A special case of derivative structure is the popular ``superstructure.'' The symmetry of a derivative structure is a subgroup of the symmetry of the basic structure. Here the te…
Molecular-weight Determination by Light Scattering.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular-weight Determination by Light Scattering.P. DebyeCite this: J. Phys. Chem. 1947, 51, 1, 18–32Publication Date (Print):January 1, 1947Publication History Published online1 May 2002Published inissue 1 January 1947https://doi.org/10.1021/j150451a002RIGHTS & PERMISSION…
Absorption of Water by Films of Cellophane and Polyvinyl Alcohol
The absorption of water and dehydration of these films is found to obey a diffusion equation by means of which a diffusivity may be defined. This is not a constant but depends on the water concentration in the foils. A rapid change in water content immediately after changing the ambient conditions suggests the presenc…
New Compounds. A New Acetylene Silver Nitrate Complex
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew Compounds. A New Acetylene Silver Nitrate ComplexJoseph Shaw and Elton FisherCite this: J. Am. Chem. Soc. 1946, 68, 12, 2745Publication Date (Print):December 1, 1946Publication History Published online7 November 2002Published inissue 1 December 1946https://pubs.acs.org/d…
18—SOME MEASUREMENTS OF THE FRICTION OF WOOL AND MOHAIR
(1946). 18—SOME MEASUREMENTS OF THE FRICTION OF WOOL AND MOHAIR. Journal of the Textile Institute Transactions: Vol. 37, No. 12, pp. T269-T280.
Magnetoresistance and Domain Theory of Iron-Nickel Alloys
Measurements of change of electrical resistivity with magnetization and with tension are reported for iron-nickel alloys containing 40 to 100 percent nickel. When the magnetostriction is negative (81 to 100 percent nickel), tension ($\ensuremath{\sigma}$) decreases resistivity, and magnetic field ($H$) increases it. D…
Investigation of Oxidation of Copper by Use of Radioactive Cu Tracer
A very thin layer of radioactive copper was electrolytically deposited on a copper blank. The surface was then oxidized in air at 1000°C for 18 minutes, giving an oxide layer with a thickness of 1.25×10−2 cm. After quenching, successive layers of the oxide were removed chemically, and the copper activity in each layer…
Stress-Time-Temperature Relations in Polysulfide Rubbers
Abstract Polysulfide rubbers of various internal structures have been investigated by measurements of continuous and intermittent relaxation of stress and by creep under constant load at temperatures between 35° C and 120° C. Continuous stress relaxation measurements indicate that these rubbers obey approximately the…
Viscometric Investigation of Dimethylsiloxane Polymers
The intrinsic viscosities of an extended series of linear methyl polysiloxane fluids, having dimethylsiloxane (Me2SiO) as the repeating unit, have been determined in toluene solution. These values have been correlated with their molecular weights, determined chemically and by osmotic pressure and light scattering meas…
Theory of Dipole Interaction in Crystals
It is shown that dipole arrays may be represented as vectors in a many-dimensional vector space. The classical dipole interaction energy is a quadratic form in the components of the dipole moments. Its calculation is reduced to the diagonalization of this form. The characteristic vectors are so called basic arrays. An…
Theory of the Structure of Ferromagnetic Domains in Films and Small Particles
The theory is developed of the domain structure of ferromagnetic bodies whose smallest dimension is comparable with the thickness of the Weiss domains as found in crystals of ordinary size. Calculations of the domain boundary, magnetic, and anisotropy energies of various domain configurations are given for thin films,…
On the Effect of the Field Reactions on the Interaction of Mesotrons and Nuclear Particles, II
Progress of Theoretical Physics Vol. 2 No. 1 (1947) pp. 6–24 On the Effect of the Field Reactions on the Interaction of Mesotrons and Nuclear Particles. III Shin-ichirô Tomonaga Progress of Theoretical Physics Vol. 2 No. 2 (1947) pp. 63–70 On the Effect of the Field Reactions on the Interaction of Mesotrons and Nuclea…
Properties of Monoclinic Crystals
Two crystals of the monoclinic sphenoidal class have been found which have modes of vibration with zero temperature coefficients of frequency, and this property together with the high electromechanical coupling and the high $Q'\mathrm{s}$ make it appear probable that these crystals may have considerable use as a subst…
Fine Structure of Viscose Rayon
Quantitative x-ray diffraction methods have been used to study the orientation of the cellulose chains and lateral ordering around the long chain axes in various commercial and experimental rayons. Lateral order can vary independently of orientation in cellulose, as is the case with other linear polymers such as the p…