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THE object of this study is the development of a quantitative theory of hysteresis-motor torque, especially in relation to magnetic properties and dimensions. The theory is interpreted physically in an idealized case, and applied to a particular motor to verify the result experimentally.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo Borohydrides. I. Aluminum BorohydrideH. I. Schlesinger, R. Thomas Sanderson, and A. B. BurgCite this: J. Am. Chem. Soc. 1940, 62, 12, 3421–3425Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940http…
The magnetic susceptibility of the anhydrous chlorides of the iron group have been studied as a function of field strength up to 32,000 gauss and as a function of temperature down to 13.9\ifmmode^\circ\else\textdegree\fi{}K. Those compounds whose room temperature susceptibility characteristic indicates a positive Curi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo Borohydrides. III. Lithium BorohydrideH. I. Schlesinger and Herbert C. BrownCite this: J. Am. Chem. Soc. 1940, 62, 12, 3429–3435Publication Date (Print):December 1, 1940Publication History Published online1 May 2002Published inissue 1 December 1940https://pubs.acs.or…
Abstract Thermische und Röntgen‐Analyse zeigen, daß im System NaCl/MgCl 4 zwei inkongruent schmelzende Verbindungen (NaMgCl 4 und Na 2 MgCl 4 ) bestehen.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCotton Fibers Constitution, Structure, and Mechanical PropertiesR. F. NickersonCite this: Ind. Eng. Chem. 1940, 32, 11, 1454–1462Publication Date (Print):November 1, 1940Publication History Published online1 May 2002Published inissue 1 November 1940https://pubs.acs.org/doi/1…
The mineral compositions of the clays from a red earth and a black cotton soil from Hyderabad, Deccan State, India, occurring in close proximity in the field are determined. Both soils are derived from the same or from very similar parent rocks, a coarsely crystalline granite or gneiss. For both soils there is practic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Reactions Relating to Carbohydrates and Polysaccharides. LXI. The Mechanism of Polymerization of Ethylene Oxide1Stanley Perry and Harold HibbertCite this: J. Am. Chem. Soc. 1940, 62, 10, 2599–2604Publication Date (Print):October 1, 1940Publication History Publishe…
The refraction per gram atom of oxygen, defined by a formula of either the Gladstone-Dale, the Newton, or the Lorentz-Lorenz type, equals the sum of terms characteristic of the component “metallic” elements, each of these terms being proportional to the number of atoms of that element per atom of oxygen. This is shown…
Ninety pages are devoted to the study of the error in volumetric titration, and can be of interest only to an occasional professional analyst. The apparatus, principles and practice of microdiffusion analysis are discussed for 186 pages; these will be of interest to the biochemist, but the methods will probably not su…
Three specimens of rutile were prepared and the dielectric properties studied over a range of frequency and temperature. A dielectric constant of approximately 100 was found which remained substantially constant through the highest radiofrequencies, falling off only in the infra-red region. The dielectric losses are l…
A bstract An attempt is made to apply the ideas of crystal chemistry to the problem of immiscibility in glass systems. Miscibility is favored by the tendency of the networkforming cations, Si, B, and P, to bond with all available oxygens in the melt. Immiscibility is favored in compositions which do not allow the othe…
The interaction theory of Rochelle salt is extended by supplementing the expression for the free energy of the deformed and polarized crystal by a term proportional to the fourth power of the polarization in the $a$ direction. This second approximation explains the dielectric and elastic saturation phenomena above the…
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 B. E. Warren, "Symposium on Optical Methods for Study of Molecular StructureI. The X-Ray Diffraction Method*," J. Opt. Soc. Am. 30, 369-373 (1940) Expo…
A double crystal spectrometer has been used to measure the shapes of the $K{\ensuremath{\beta}}_{2,5}$-emission lines and the $K$-absorption edges of zinc and nickel in two zinc-nickel alloys containing 17 percent zinc and 30 percent zinc by weight, respectively. These lines arise from transitions of valence and 3d el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Comparison of Esterification and Ester Interchange KineticsPaul J. FloryCite this: J. Am. Chem. Soc. 1940, 62, 9, 2261–2264Publication Date (Print):September 1, 1940Publication History Published online1 May 2002Published inissue 1 September 1940https://pubs.acs.org/doi/10.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Infrared Spectrum of Potassium Cyanate SolutionsDudley WilliamsCite this: J. Am. Chem. Soc. 1940, 62, 9, 2442–2444Publication Date (Print):September 1, 1940Publication History Published online1 May 2002Published inissue 1 September 1940https://pubs.acs.org/doi/10.1021/ja…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTKinetics of the Degradation of Polyesters by Alcohols1Paul J. FloryCite this: J. Am. Chem. Soc. 1940, 62, 9, 2255–2261Publication Date (Print):September 1, 1940Publication History Published online1 May 2002Published inissue 1 September 1940https://pubs.acs.org/doi/10.1021/ja0186…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalysts From AlloysMurray RaneyCite this: Ind. Eng. Chem. 1940, 32, 9, 1199–1203Publication Date (Print):September 1, 1940Publication History Published online1 May 2002Published inissue 1 September 1940https://pubs.acs.org/doi/10.1021/ie50369a030https://doi.org/10.1021/ie5…
Abstract The role of various types of lattice flaws is discussed in their bearing on melting and crystal structure. Freezing-point determinations on lattices of a single molecule indicate the presence of such flaws in the crystals of polymethylene compounds. Freezing-point determinations on composite lattices of keton…