Materials Literature
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X-ray diffraction patterns of carbon black have been made with strictly monochromatic radiation. Without making any assumptions as to the crystallinity of the material, the distribution of atoms about any one atom has been determined directly from the experimental scattering curve by the method of Fourier integral ana…
As a result of a new mathematical analysis of the action of the double crystal spectrometer, a method of using the instrument has been found which makes it possible to determine the spectral energy distribution of an x-ray line and to calibrate the instrument without any previous knowledge of the diffraction patterns…
A method for the direct determination of the components of interatomic distances in crystals has been developed from a consideration of the properties of the Fourier series whose coefficients are the squares of the $F$-coefficients for the crystal reflections. Valuable structural information is thus obtained without m…
The system PbO-Si0 2 , of interest to investigators and manufacturers of ceramic glazes and glasses, was investigated.The following compounds were identified and their optical properties, linear thermal expansion, and melting temperatures determined: 4PbO.Si0 2 , 2PbO.Si02, and PbO.Si0 2 .The compositions and melting…
Single crystals of Fe-Co alloys were obtained from recrystallized pure ingots and their components of magnetization parallel to magnetic forces applied along axes of symmetry were measured by a pendulum magnetometer. It was found that the direction for easiest magnetization changes from $〈100〉$ to $〈111〉$ as the amoun…
Abstract The study of the alloys of the ferromagnetic with other elements promises to elucidate some of the problems of ferromagnetism. Sadron, for instance, has determined the "ferromagnetic moment" of certain foreign elements in nickel. He finds that elements in the same column of the periodic table have nearly the…
The triple salts Cs2AgAuCl6 and Cs2AuAuCl6 have been investigated by means of magnetic susceptibility measurements and x-ray powder photographs in order to obtain information regarding the general nature of these compounds. Both compounds were found to be diamagnetic. X-ray powder-photographic data lead to a cubic str…
The line absorption spectrum of chrome alum has been photographed at five temperatures from 85° to 14°K. The variation with temperature of the intensities of certain of these lines suggests the existence of one or more excited lower levels. At 14°K a new group of faint, sharp lines appears near 4500A. A general discus…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of Dezincification - Corrosion of BrassCharles W. Stillwell and Edward S. TurnipseedCite this: Ind. Eng. Chem. 1934, 26, 7, 740–743Publication Date (Print):July 1, 1934Publication History Published online1 May 2002Published inissue 1 July 1934https://pubs.acs.org/d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Dielectric Properties of CelluloseW. N. StoopsCite this: J. Am. Chem. Soc. 1934, 56, 7, 1480–1483Publication Date (Print):July 1, 1934Publication History Published online1 May 2002Published inissue 1 July 1934https://doi.org/10.1021/ja01322a011RIGHTS & PERMISSIONSArticle…
It is shown both theoretically and by examination of the Leiden experimental data on Ce${\mathrm{F}}_{3}$ and tysonite that in rare earth compounds the Verdet constant $V$ should exhibit the same dependence upon temperature as does the magnetic susceptibility $\ensuremath{\chi}$, even when Curie's law is not obeyed. I…
The Annals of Mathematics is currently published by Annals of Mathematics. Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use provides, in part, that unless you have ob…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Glass. IX. The Electrical Conductivity of Boron Trioxide–Sodium Borate Glasses.Monroe E. SpaghtMonroe E. SpaghtMore by Monroe E. Spaght and John D. ClarkJohn D. ClarkMore by John D. ClarkCite this: J. Phys. Chem. 1934, 38, 6, 833–838Publication Date (Print):June 1…
In an effort to clarify the confusion that has existed during past years regarding the flashover strength of insulators, the A.I.E.E. lightning and insulator subcommittee <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∗</sup> has been engaged, jointly with high voltage l…
X-ray diffraction patterns of vitreous Si${\mathrm{O}}_{2}$ and Ge${\mathrm{O}}_{2}$ have been made in an evacuated camera using Cu $K\ensuremath{\alpha}$ radiation monochromatized by crystal reflection. Intensity curves are obtained from the microphotometer records in the usual way. A method is developed for calculat…
The thirty modes of vibration of the regular plane hexagon model for the benzene molecule, including both the hydrogen and carbon atoms, are derived by the group theory method described by Wigner. From these the twenty frequencies of vibration are calculated in terms of a simple potential function involving six force…
T. L. WOO, PH.D., G. M. MORANT, D.Sc.; A BIOMETRIC STUDY OF THE “FLATNESS” OF THE FACIAL SKELETON IN MAN, Biometrika, Volume 26, Issue 1-2, 1 May 1934, Pag
Abstract Our knowledge of the compounds containing carbonyl and nitrosyl (NO) group attached to metallic atoms has been greatly extended in recent years, gely through the work of Hieber and Manchot and their collaborators; but structures which have been suggested, especially for the nitrosyl derivaties, are not in eve…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrides of Boron and Silicon.Alfred StockAlfred StockMore by Alfred StockCite this: J. Phys. Chem. 1934, 38, 5, 714–715Publication Date (Print):May 1, 1934Publication History Published online1 May 2002Published inissue 1 May 1934https://doi.org/10.1021/j150356a019RIGHTS & P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heat Capacities of Magnesium, Zinc, Lead, Manganese and Iron Carbonates at Low Temperatures1C. Travis AndersonCite this: J. Am. Chem. Soc. 1934, 56, 4, 849–851Publication Date (Print):April 1, 1934Publication History Published online1 May 2002Published inissue 1 April 19…