Materials Literature
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Abstract "Bleaching powder" is made by the action of chloride gas on calcium hydroxide, the reaction being essentially: 2Ca(OH)2 + 2Cl2 → Ca(OCl)2 + CaCl2 + 2H2O. The constitution of the solid formed in this way has been the subject of investigation and speculation for many years, since its properties are not those to…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTCatalytic Oxidations. I. Oxidations in the Furan SeriesNicholas A. Milas and William L. WalshCite this: J. Am. Chem. Soc. 1935, 57, 8, 1389–1393Publication Date (Print):August 1, 1935Publication History Published online1 May 2002Published inissue 1 August 1935https://pubs.acs.or…
Kaolinite was synthesized by heating coprecipitated AJ20 3-Si02 gels and mixtures of Al20 3 and Si02 with water in a pressure bomb at 310 0 C. Similarly dickite was prepared by treating coprecipitated Ah03-Si02 gels at 350 0 C and 365 0 C, beidellite from mixtures of Ab03 and Si02 at 350 0 C and 390 0 C, and also from…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Reactions of Some Oxides of Nitrogen with Atomic Oxygen and NitrogenM. L. Spealman and W. H. RodebushCite this: J. Am. Chem. Soc. 1935, 57, 8, 1474–1476Publication Date (Print):August 1, 1935Publication History Published online1 May 2002Published inissue 1 August 1935htt…
A comparison of Fermi's formula for the distribution in energy of the electrons and positrons emitted by radioactive bodies with the observed spectra seems to show that a basic factor in it, the statistical factor, is not asymmetric enough. Since about the same degree of asymmetry is common to the spectra of light and…
The magnetic susceptibilities and electrical conductivities of cobalt, nickel and palladium and of their alloys with copper, silver and gold are discussed on the basis of the quantum theory of metals. It is shown that the number of electrons in the outermost s state must be about 0.6 per atom in the transition metals…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Production of Temperatures below One Degree Absolute by Adiabatic Demagnetization of Gadolinium SulfateW. F. Giauque and D. P. MacDougallCite this: J. Am. Chem. Soc. 1935, 57, 7, 1175–1185Publication Date (Print):July 1, 1935Publication History Published online1 May 2002…
Some of the consequences of the positron theory for the special case of impressed electrostatic fields are investigated. By imposing a restriction only on the maximum value of the field intensity, which must always be assumed much smaller than a certain critical value, but with no restrictions on the variation of this…
Abstract In a recent paper, Bragg and Williams have pointed out that the arrangement of the atoms in an alloy depends in a striking way on the temperature. At high temperatures, the atoms are distributed practically at random among the lattice points of the crystal, but at low temperatures a superlattice may be formed…
The theory of Ewald and Born of the double refraction of crystals is applied to the calculation of the photoelastic properties of $D$ lattices. Only in special cases, as for instance in KCl for pressure parallel [111], is the effect determined by the anisotropy of the Lorentz and Coulomb forces. In these cases the pho…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow Temperature Specific Heats. V. The Heat Capacity of Tricalcium Phosphate between 15 and 298°K.J. C. Southard and R. T. MilnerCite this: J. Am. Chem. Soc. 1935, 57, 6, 983–984Publication Date (Print):June 1, 1935Publication History Published online1 May 2002Published inis…
The cristobalite type of structure which has been previously observed in certain silicates: carnegieite, NaAlSiO4, and Na2CaSiO4 is now shown to occur in K2O.Al2O3, K2O.Fe2O3, and Na2O.Al2O3.
The photoelastic effect in amorphous solids is caused by two effects. The elastic deformations alter the Lorentz-Lorenz interaction between the dipoles, and in addition produce optical anisotropy of the atoms. For pressure the first effect creates positive birefringence, while the second effect gives negative birefrin…
Zusammenhang zwischen Unterkühlbarkeit und Anlaufzeit einer allotropen Umwandlung. Anlaufzeit der Bildung von Ferrit, Zementit und Perlit aus dem Austenit. Impfwirkung von Sulfiden, Korngrenzen und Oxyden.
No satisfactory crystal structure determination has been made of any of the forms of phosphorus. Five samples of black phosphorus gave identical powder patterns different from those reported by Linck and Jung, whose rhombohedral structure gives improbable interatomic distances and coordination. A sample which had been…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChlorophyll and hemoglobin—Two natural pyrrole pigmentsEmma M. Dietz Cite this: J. Chem. Educ. 1935, 12, 5, 208Publication Date (Print):May 1, 1935Publication History Received3 August 2009Published online1 May 1935Published inissue 1 May 1935https://doi.org/10.1021/ed012p208…
Frequency components are found for the ferromagnetic induction produced by a small magnetizing force of two incommensurable frequencies. Because of hysteresis the results depend intimately upon the ratios of these frequencies and of their amplitudes. With these ratios as criteria, two solutions are provided, adequate…
Article Physikalisch-chemische Stadien am Zinn. X. Die Umwandlungstemperatur graues Zinn ⇄ weisses Zinn was published on April 1, 1935 in the journal Zeitschrift für Physikalische Chemie (volume 173A, issue 1).
This paper presents the results of investigations of dissipation of energy in vibrating solids, mostly metals, by means of longitudinal and torsional vibrations of cylindrical rods. The amplitudes of strain used have been kept between 10−5 cm/cm and 10−8 cm/cm, in which range the dissipation of energy is proportional…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn Explanation of Hysteresis in the Hydration and Dehydration of GelsJames W. McBainCite this: J. Am. Chem. Soc. 1935, 57, 4, 699–700Publication Date (Print):April 1, 1935Publication History Published online1 May 2002Published inissue 1 April 1935https://pubs.acs.org/doi/10.…