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The first part of this paper deals with a method for the accurate determination of the surface tension of liquids available in volumes of not more than one or two cubic millimetres. The method described does not involve any knowledge of the density of the liquid. The second part of the paper describes a series of meas…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMOLECULAR ROTATION IN THE SOLID STATE. THE VARIATION OF THE CRYSTAL STRUCTURE OF AMMONIUM NITRATE WITH TEMPERATURES. B. Hendricks, E. Posnjak, and F. C. KracekCite this: J. Am. Chem. Soc. 1932, 54, 7, 2766–2786Publication Date (Print):July 1, 1932Publication History Publishe…
The crystal lattice of germano sulphide, GeS, was examined by means of the Laue method, the powder method and the oscillating crystal method. The crystals are orthorhombic bipyramidal. The dimensions of the unit cell were found to be: $a=4.29\ifmmode\pm\else\textpm\fi{}0.01\mathrm{A}$, $b=10.42\ifmmode\pm\else\textpm\…
Abstract The investigation of the molecular structure of organic beryllium compounds is being studied by one of us (W. R. A.) from the standpoint of their infra-red absorption spectra. During a mechanical defect in the infra-red apparatus the diamagnetic susceptibilities of basic beryllium acetate, propionate, and piv…
Abstract It has long been known that certain crystal contacts will rectify alternating currents, but no entirely satisfactory theory has yet been given. The most generally accepted theory is that due to Schottky, which has recently been discussed by van Geel. If a metal, and a semi-conductor such as cuprous oxide or…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE COMPOSITION OF MAGNESIUM OXYCHLORIDEH. S. LukensCite this: J. Am. Chem. Soc. 1932, 54, 6, 2372–2380Publication Date (Print):June 1, 1932Publication History Published online1 May 2002Published inissue 1 June 1932https://pubs.acs.org/doi/10.1021/ja01345a026https://doi.org/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies in the Vulcanization of RubberDonald W. KitchinCite this: Ind. Eng. Chem. 1932, 24, 5, 549–555Publication Date (Print):May 1, 1932Publication History Published online1 May 2002Published inissue 1 May 1932https://pubs.acs.org/doi/10.1021/ie50269a019https://doi.org/10.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PREPARATION AND PROPERTIES OF IODINE MONOCHLORIDE1Jacob Cornog and R. A. KargesCite this: J. Am. Chem. Soc. 1932, 54, 5, 1882–1887Publication Date (Print):May 1, 1932Publication History Published online1 May 2002Published inissue 1 May 1932https://pubs.acs.org/doi/10.102…
Abstract Folgende kristallisierte Hydroxyde wurden isobar bei PH 2 O = 100 mm Hg unter röntgenographischer Kontrolle der Entwässerungsprodukte verschiedensten Grades abgebaut; Hydrargillit, Bayerit, Böhmit, Diaspor, stabil und metastabil kristallisiertes Be(OB) 2 . Trotz Verwendung kleinster Druckräume (0,3–0,8 cm 3 )…
Abstract Die Gleichgewichtsdrucke der Reaktion equation image wurden bestimmt, wobei sowohl die Zersetzung des CaSO 4 , wie die Einwirkung von SO 3 auf CaO studiert wurde.
A treatment of the $N+1$ electron Schroedinger equation describing the elastic scattering of an electron beam by an atom with $N$ electrons in the outer shell which, in first approximation, leads to the equation $({\ensuremath{\nabla}}^{2}+{k}^{2}+U(r))f(x, y, z)=0,$ widely used for the computation of low velocity ela…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSTUDIES OF POLYMERIZATION AND RING FORMATION. XIII. POLYAMIDES AND MIXED POLYESTER—POLYAMIDESWallace H. Carothers and Julian W. HillCite this: J. Am. Chem. Soc. 1932, 54, 4, 1566–1569Publication Date (Print):April 1, 1932Publication History Published online1 May 2002Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSTUDIES OF POLYMERIZATION AND RING FORMATION. XV. ARTIFICIAL FIBERS FROM SYNTHETIC LINEAR CONDENSATION SUPERPOLYMERSWallace H. Carothers and Julian W. HillCite this: J. Am. Chem. Soc. 1932, 54, 4, 1579–1587Publication Date (Print):April 1, 1932Publication History Published o…
ABSTRACT By heating alkali silicates under CO 2 at high pressures, alkali carbonates are reformed to an extent depending upon temperature, pressure, and chemical affinity. The CO 2 thus existing homogeneously dissolved in the glass, and other anions and oxygen similarly dissolved and in chemical equilibrium are termed…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn Experimental Investigation of the Phase Relations of Potassium Tetrasilicate under PressureR. W. GoransonR. W. GoransonMore by R. W. Goranson and F. C. KracekF. C. KracekMore by F. C. KracekCite this: J. Phys. Chem. 1932, 36, 3, 913–926Publication Date (Print):March 1, 19…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAQUEOUS SOLUBILITY OF SALTS AT HIGH TEMPERATURES. I. SOLUBILITY OF SODIUM CARBONATE FROM 50 TO 348°1William F. Waldeck, George Lynn, and Arthur E. HillCite this: J. Am. Chem. Soc. 1932, 54, 3, 928–936Publication Date (Print):March 1, 1932Publication History Published online1…
Cunningham and Darrow (4) have recently overcome this objection by partly neutralizing sodium bicarbonate previously sterilized in the dry state with hydrochloric acid.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChrome Tanning I. The Role Played by Sodium Chloride in Chrome Liquors upon Chrome TanningEdwin R. Theis and A. W. GoetzCite this: Ind. Eng. Chem. 1932, 24, 3, 304–307Publication Date (Print):March 1, 1932Publication History Published online1 May 2002Published inissue 1 Marc…
Abstract The stress-strain relations of a sample of rubber are very markedly affected by the previous strain history. Rubber will recover to some extent from the effects of a strain, but not completely. In a rubber compound, such as tread stock, a series of increasing strains has a pronounced progressive action, each…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PREPARATION OF COPPER-CHROMIUM OXIDE CATALYSTS FOR HYDROGENATIONRalph Connor, Karl Folkers, and Homer AdkinsCite this: J. Am. Chem. Soc. 1932, 54, 3, 1138–1145Publication Date (Print):March 1, 1932Publication History Published online1 May 2002Published inissue 1 March 19…