Praseodym, Neodym und Wasserstoff
Abstract Bei der Einwirkung von Wasserstoff auf Praseodym entstehen feste Lösungen von derselben Art wie beim Cer und Lanthanmischemetall.
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Zustandsdiagramme binärer Systeme, die als eine Komponente, AsBr3 enthalten
Abstract Es wurden die Zustandsdiagramme von sechs binären Systemen untersucht, die einerseits aus AsBr 3 , andererseits aus SbBr 3 , Anilinhydrochlorid, Resorcin, Phenol, α‐Naphthol und Äthylurethan zusammengesetzt sind. Es ist bewiesen worden: Das System AsBr 3 + SbBr 3 stellt eine ununterbrochene Reihe fester Lösun…
Schultenite, a new mineral, from South-West Africa
Baron A. De Schulten, a political refugee from Finland, worked during the latter part of his life in the chemical laboratories of the Sorbonne in Paris. There he prepared in a crystallized form number of minerals and compounds analogous to them. These were determined crystallographlcally and compared in isonlorphous s…
THE THEORY OF PICKLING OF SHEET IRON AND STEEL FOR ENAMELING PURPOSES 1
ABSTRACT The fundamental principal of efficient pickling is that efficient pickling does not depend on the solution of a large amount of metal but on the solution of a very thin layer of metal directly beneath the scale, rapidly and with copious evolution of hydrogen. The activity of an acid solution depends on the am…
Atomic Radii. II
X-ray data show that the two assumptions usually involved in previous calculations of atomic radii from crystal structures---namely (1) that the distance between adjacent atomic centers in crystals equals the sum of the two atomic radii, and (2) that the radii of atoms of the same element in different crystals are equ…
The Light Flux Distribution of a System of Interreflecting Surfaces
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Ziro Yamauti, "The Light Flux Distribution of a System of Interreflecting Surfaces," J. Opt. Soc. Am. 13, 561-571 (1926) Export Citation BibTex Endnote…
THERMAL DATA ON ORGANIC COMPOUNDS. IV. THE HEAT CAPACITIES, ENTROPIES AND FREE ENERGIES OF NORMAL PROPYL ALCOHOL, ETHYL ETHER AND DULCITOL
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHERMAL DATA ON ORGANIC COMPOUNDS. IV. THE HEAT CAPACITIES, ENTROPIES AND FREE ENERGIES OF NORMAL PROPYL ALCOHOL, ETHYL ETHER AND DULCITOLGeorge S. Parks and Hugh M. HuffmanCite this: J. Am. Chem. Soc. 1926, 48, 11, 2788–2793Publication Date (Print):November 1, 1926Publicati…
Experiments on the production of large copper crystals
Abstract Five years ago one of the authors with Miss Elam devised a method of preparing “ single-crystal ” test-pieces of aluminium from bars of the polycrystalline metal by the method of critical straining and subsequent heat treatment. As a result of this work it has been possible to prepare a large number of single…
The formation of twinned metallic crystals
Abstract When strained, with or without subsequent heating, many metals produce twinned markings. It is customary to call the former mechanical twins and the latter annealing twins. According to Dana “ twin crystals are those in which one or more parts regularly arranged are in reverse position with reference to the o…
Über die Kristallstruktur der Telluride von Beryllium, Zink, Cadmium und Quecksilber
Article Über die Kristallstruktur der Telluride von Beryllium, Zink, Cadmium und Quecksilber was published on October 1, 1926 in the journal Zeitschrift für Physikalische Chemie (volume 124U, issue 1).
Electrode Effects in the Measurement of Power Factor and Dielectric Constant of Sheet Insulating Materials
It is shown that, aside from the guard ring type of electrode which can only be used with certain special types of measuring circuit, the most accurate results can probably be obtained by the use of equal foil electrodes and making proper allowance for the edge effects. From the standpoint of convenience, mercury elec…
THE VAPOR PRESSURES AND THERMAL PROPERTIES OF POTASSIUM AND SOME ALKALI HALIDES
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE VAPOR PRESSURES AND THERMAL PROPERTIES OF POTASSIUM AND SOME ALKALI HALIDESErnest F. Fiock and Worth H. RodebushCite this: J. Am. Chem. Soc. 1926, 48, 10, 2522–2528Publication Date (Print):October 1, 1926Publication History Published online1 May 2002Published inissue 1 O…
The structure of γ-brass
Abstract Westgren and Phragmén have recently described the results of investigations on the structures of Cu-Zn, Ag-Zn and Au-Zn alloys. As a result X-ray analysis by the powder method, five different types of structure were found in the case of the Cu-Zn alloys. Structures were successfully assigned to four of these…
On the Reaction Mechanism of the Catalytic Oxidation of Ammonia
ADVERTISEMENT RETURN TO ISSUEArticleNEXTOn the Reaction Mechanism of the Catalytic Oxidation of AmmoniaShun-ichi UchidaShun-ichi UchidaMore by Shun-ichi UchidaCite this: J. Phys. Chem. 1926, 30, 10, 1297–1305Publication Date (Print):October 1, 1926Publication History Published online1 May 2002Published inissue 1 Octob…
Notes on the Development of a Trilobite, Shumardia pusilla (Sars).
C. J. Stubblefield; Notes on the Development of a Trilobite, Shumardia pusilla (Sars)., Zoological Journal of the Linnean Society, Volume 36, Issue 244, 1
Zur elektrolytischen Dissoziation der zweibasischen Säuren. III. Bestimmung zweiter Dissoziationskonstanten aus Löslichkeitsversuchen
Abstract Es wird eine Methode beschrieben, zweite Dissoziationskonstanten zweibasischer Säuren aus der Löslichkeit einer schwerlöslichen einbasischen Säure in der Lösung eines neutralen Salzes der zweibasischen Säure zu berechnen. Die Anwendbarkeit der Methode wird an Oxalsäure, Bernsteinsäure, Fumarsäure, l ‐Apfelsäu…
The forces between atoms and ions.―II
Abstract 1. This note is supplementary to a paper recently published on the same subject. It extends the results so as to provide a complete table of forces between the monovalent and divalent ions of the inert gas type as well as between the inert gases themselves. The method follows that of the previous paper, in wh…
The effect of occluded hydrogen on the tensile strength of iron
Abstract For many years attention has been directed to the embrittling of iron and steel by acid, and it is generally considered that the embrittling is due to the occlusion of hydrogen by the metal. This subject is of particular importance in those branches of the iron and steel industry where acid is used to remove…
Secondary Electron Emission from Tungsten, Copper and Gold
By a null method of high precision, previously described, the secondary electron emission from tungsten, copper and gold surfaces bombarded by an electron stream has been measured and the ratio $\frac{{I}_{1}}{{I}_{2}}$ of secondary current to primary current plotted as a function of the velocity of the primary electr…
The Precipitation of Calcium and Magnesium from Sea Water
Apparently calcium carbonate is precipitated in certain parts of the ocean by processes which are inorganic in so far as that the calcium does not first form a true constituent of organisms (Clarke, 1920, p. 128). The conditions governing solubility of calcium in sea-water have been reviewed by Johnston and Williamson…