Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The X-ray structure of single crystals of Heusler alloy has been examined by the single crystal rotation method. The alloy is found to crystallize as a body-centred cube with lattice constant 2.95 Å.U. The aluminium atoms are distributed so as to lie on a face-centred cube with lattice constant = 5.9 Å.U. Directional…
There are numerous experimental results in the diffraction of x-rays in liquids that seek explanation by an adequate theory. They may be enumerated at least in part as follows: (1) small scattering intensity near zero diffraction angle, (2) a principal maximum in the intensity-diffraction-angle curve corresponding to…
The problem was suggested by Professor G. I. Taylor as being of interest and importance in the phenomena of rupture in a solid, due to the presence of a crack, and the slip in a crystal. In experiments on the distortion of a crystal of aluminium under a tensile stress the conclusion is reached that “…as far as these e…
Abstract Durch eine Röntgenanalyse des CuSn‐Systems hat sich ergeben, daβ hier eine Phasenreihe auftritt, die der des CuZn‐Systems strukturell analog ist.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Glass. II. The Transition between the Glassy and Liquid States in the Case of GlucoseG. S. ParksG. S. ParksMore by G. S. Parks, H. M. HuffmanH. M. HuffmanMore by H. M. Huffman, and F. R. CattoirF. R. CattoirMore by F. R. CattoirCite this: J. Phys. Chem. 1928, 32,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE THERMAL DECOMPOSITION OF AMMONIA ON TUNGSTEN, MOLYBDENUM AND NICKEL. IC. H. KunsmanCite this: J. Am. Chem. Soc. 1928, 50, 8, 2100–2113Publication Date (Print):August 1, 1928Publication History Published online1 May 2002Published inissue 1 August 1928https://pubs.acs.org/…
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Because of the theoretically impossible structure of these bands as reported by previous observers, the writers have measured them, in absorption, in the third order spectrum of a seven inch plane grating mounted in a forty foot spectrograph. Each band is found, quite definitely, to consist of only one $P$, one $Q$ an…
ABSTRACT Beryllium glass has been prepared for the first time, and some of its physical and optical properties have been determined. More than eighty different compositions have been melted and studied. Four series were taken from the clear glass area and examined for density, hardness, refractive index, and ultra‐vio…
An experimental study of the distribution in direction of photoelectrons emitted from alkali metal surfaces irradiated by light incident at varions angles and polarized in different planes.---The alkali metal surfaces used were of two sorts: (1) liquid alloys of sodium and potassium, (2) thin films of potassium or rub…
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon Blacks and Their Use in Rubber1: I—Comparative Properties of Blacks and Tests in Uncured RubberNorris Goodwin and C. R. ParkCite this: Ind. Eng. Chem. 1928, 20, 6, 621–627Publication Date (Print):June 1, 1928Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE ATOMIC ARRANGEMENT IN THE CRYSTAL OF ORTHORHOMBIC IODINEPreston M. Harris, Edward Mack Jr., and F. C. BlakeCite this: J. Am. Chem. Soc. 1928, 50, 6, 1583–1600Publication Date (Print):June 1, 1928Publication History Published online1 May 2002Published inissue 1 June 1928h…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT"Normal Aging" of Compounded Rubber 1,2Ralph H. Mckee and Harlan A. DepewCite this: Ind. Eng. Chem. 1928, 20, 5, 484–491Publication Date (Print):May 1, 1928Publication History Published online1 May 2002Published inissue 1 May 1928https://pubs.acs.org/doi/10.1021/ie50221a018h…
Abstract 1. Introduction.—The main features of the phenomenon of the extraction of electrons from cold metals by intense electric fields are well known, and an approximate theory of the effect was first developed by Schottky. More recently the experimental data have been much improved, notably by Millikan and Eyring,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPSEUDO BASES AND THEIR SALTS IN THE ISOXAZOLE SERIESE. P. Kohler and A. H. BlattCite this: J. Am. Chem. Soc. 1928, 50, 4, 1217–1226Publication Date (Print):April 1, 1928Publication History Published online1 May 2002Published inissue 1 April 1928https://pubs.acs.org/doi/10.10…
In a recent communication to this Society Dr Hartree has put forward a method for calculating the field of anatom containing many electrons. Each orbit—to borrow a metaphor from the old quantum theory—is related to a wave-function Ψ which obeys Schrödinger's equation. The potential energy used in this equation is due…
Abstract 1. No systematic investigation on this subject has yet been attempted. The efforts made to group these materials in a series according to the charges generated when they are rubbed two at a time are of uncertain value because of (1) impurities of substance and surface, (2) indeterminate initial surface strain…
Abstract Blindfolded persons walk, run, swim, row, and drive automobiles in clock‐spring spiral paths of greater or less regularity when attempting a straightaway. The spirals turn either right or left in one and the same individual, and may do so even in one experiment. But either right or left turns predominate in t…
Abstract It is shown that β-brass, which has a crystal structure similar to that of α-iron, behaves in a similar, though not identical, manner when distorted. The peculiar feature of the distortion of iron crystals, namely, the fact that slip does not occur on a definite crystallographic plane, is repeated in β-brass…