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System of equations governing nonlinear bending of plates consisting of two or more bonded thin layers; effects of both transverse and in-plane loading and thermal gradients through plate thickness as well as over plate faces are given; specialization of equations for particular classes of problems.
As an example of a mounting in which the optical components are not on the Rowland cylinder, the Seya-Namioka mounting is treated mainly from the standpoint of physical optics. An ambiguity in the physical meaning of Beutler’s focal conditions is clarified; using the corrected condition a brief summary of the optical…
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An attempt is made to account for the observed birefringence of the various types of polypropylene spherulite in terms of preferred crystalline orientation. Evidence is also presented showing that some of these spherulites crystallize with a new metastable crystal structure, not previously described.
A survey has been made of spherulites formed by the isothermal crystallization of polypropylene from the melt in the temperature range 110°–148°C. Four types of spherulite have been distinguished and their structural morphology, optical properties, melting behavior, and growth rates have been examined.
An empirical method for determining the crystallinity of native cellulose was studied with an x-ray diffractometer using the focusing and transmission techniques. The influence of fluctuations in the primary radiation and in the counting and recording processes have been determined. The intensity of the 002 interferen…
Calorimetric optical absorption measurements at 4.2\ifmmode^\circ\else\textdegree\fi{}K have been made on a representative series of $\ensuremath{\alpha}$ brasses over the wavelength range 0.23 to 4.0 microns using electropolished bulk specimens. Changes in the absorption spectrum below 6000 A are interpreted in the l…
Measurements have been made of the Curie points and magnetic moments of three series of compounds (Laves phases) $M{\mathrm{Ir}}_{2}$, $M{\mathrm{Os}}_{2}$, and $M{\mathrm{Ru}}_{2}$, where $M$ is a rare-earth element. The Curie point is highest (85\ifmmode^\circ\else\textdegree\fi{}K) for the compounds containing Gd a…
Electron-spin resonance of bound substitutional nitrogen donors in diamond is observed and discussed. The $g$ factor is isotropic at 2.0024\ifmmode\pm\else\textpm\fi{}0.0005. For a given donor, one of the C-N bond directions is a hyperfine axis with constants $A=40.8$ oersteds, $B=29.2$ oersteds. There are thus four t…
Abstract Metallorganische Verbindungen reagieren in verschiedener Weise mit molekularem Sauerstoff. Alkyl‐Metall‐Verbindungen werden zu Metallalkyl‐peroxyden oxydiert. Aus den Alkali‐Addukten aromatischer Kohlenwasserstoffe entstehen Alkali‐peroxyd und Kohlenwasserstoff. Aryl‐Metall‐Verbindungen schließlich ergeben al…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. C. Hall; Forced Magnetostriction of Nickel. Journal of Applied Physics 1 September 1959; 30 (9…
External and internal factors influencing the rate and distribution of corrosion are discussed. Among the external factors considered are: pH of the solution, influence of elements acting as inhibitors or as stimulants of corrosion, the concentration of neutral salts, the temperature of solution and the rate of soluti…
The Hall coefficient and transverse magnetoresistance of two type II-b semiconducting diamonds (p-type) were measured as a function of magnetic field from 500 gauss to 20 000 gauss at fixed temperatures between 0°C and 100°C. These diamonds have R σ values of about 1000 cm 2 v -1 sec -1 at room temperature. The Hall c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiolysis of Methanol and Methanolic Solutions by CO60Gamma-Rays and 1.95 x 106Volt de Graaf ElectronsNorman N. LichtinCite this: J. Phys. Chem. 1959, 63, 9, 1449–1454Publication Date (Print):September 1, 1959Publication History Published online1 May 2002Published inissue 1…
The effect of the short fiber content of a cotton on yarn and fabric properties and processing efficiency, long a speculative and controversial subject, is investigated to a limited extent in this paper by the technique of cutting sliver into and ¼- and ½-in. segments and adding the resulting short fibers to the paren…
Summary Studies are described of various specimens of diamonds made by the General Electric Company of New York, and by Allmänna Svenska Elektriska Aktiebolaget, Västeras, Sweden. The G.E. synthetic diamonds always contain single crystal inclusions of nickel or of a Ni-rich face-centred cubic compound. These are stric…
Abstract 1. The highest hydrogenation activity was obtained when the silk-palladium catalyst was prepared by boiling the silk fibroin fibers with 0.1% palladous chloride solution in 0.1 n acetic acid for 8 min. and then hydrogenating the resulting chelate. 2. The catalyst prepared as above was, however, devoid of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Composition of Pyrodextrins. II. Thermal Polymerization of Levoglucosan1M. L. Wolfrom, A. Thompson, and R. B. WardCite this: J. Am. Chem. Soc. 1959, 81, 17, 4623–4625Publication Date (Print):September 1, 1959Publication History Published online1 May 2002Published inissue…
Two independent, three-dimensional sets of intensity data have been collected from two different crystals of basic beryllium acetate (Be40(CH3COg)8 , cubic, /~d3, a 0 = 15.74 A, Z = 8). An Eulerian cradle Geiger counter spectrometer was employed for the measurements. Two crystals were surveyed so as to insure against…
The magnetic susceptibilities of six spin-free tetrahalo complexes of bivalent cobalt, CoX4—2 (X=Cl—, Br—, I—), have been investigated over a temperature range and found to exhibit satisfactory dependence on the Curie-Weiss law. The magnetic moments were found to be in the order predicted by crystal field theory, viz.…