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The Verdet constants of a number of glasses have been measured with the object of studying the Faraday effect in glass. The Verdet constant was measured for three types of glasses: (1) optical glasses, where the Verdet constant correlates well with the reciprocal dispersion; (2) diamagnetic glasses, where glasses whic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization of Drying OilsHerman WexlerCite this: Chem. Rev. 1964, 64, 6, 591–611Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 December 1964https://pubs.acs.org/doi/10.1021/cr60232a001https://doi.org/10.1021/cr6…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOctacoordinate Chelates of Lanthanides. Two Series of CompoundsHerbert. Bauer, Joseph. Blanc, and Daniel L. RossCite this: J. Am. Chem. Soc. 1964, 86, 23, 5125–5131Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 Dece…
Abstract “Compulsive” exchange takes place between a barium‐soil and magnesium sulphate solution because Ba 2+ ions are removed from solution by precipitation of barium sulphate. This phenomenon provides a basis for the very convenient routine method for cation‐exchange capacity determination in soils described here.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Water-insoluble Polyanionic Derivative of Trypsin. II. Effect of the Polyelectrolyte Carrier on the Kinetic Behavior of the Bound Trypsin*Leon Goldstein, Yehuda Levin, and Epharaim KatchalskiCite this: Biochemistry 1964, 3, 12, 1913–1919Publication Date (Print):December 1,…
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Thermal conductivity measurements on high-purity SiC and impure Si and SiC have been made over the temperature range from 3° to 300°K. These results show that the thermal conductivity K, of the highest purity SiC is intermediate between those of pure Si and pure diamond, and at 300°K is greater than that of copper. Th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Fluorescence of Some Trivalent Lanthanide ComplexesL. R. Melby, N. J. Rose, E. Abramson, and J. C. CarisCite this: J. Am. Chem. Soc. 1964, 86, 23, 5117–5125Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue…
Measurements have been made of the crystal-field splitting of the $^{7}F_{J}$ energy levels of the $4{f}^{6}$ configuration of the ${\mathrm{Sm}}^{2+}$ ion which is dissolved in a number of alkali-halide lattices. Crystal-field term assignments were made from the results of polarized-emission measurements. Observed cr…
Luminescence observed upon low-temperature x-ray excitation of alkali-halide crystals has been identified as due to radiative electron-hole recombination in the perfect lattice. In KCl the emission spectrum is a single band, while in KBr, KI, and NaCl there are two bands. In crystals containing self-trapped holes, opt…
The use of the Kramers-Kronig relation in the analysis of reflectance data is discussed briefly. The recent results of Walker and Osantowski for diamond are reanalyzed and found to be in some error. New data are presented which appear more consistent with the expected optical behavior of diamond.
New high pressure forms of the sesquioxides of holminum, erbium, thulium, ytterbium, lutetium, and yttrium have been obtained by exposure of the C-type sesquioxides to pressures between 25 and 40 kilobars and temperatures between 900 degrees and 1020 degrees C. X-ray diffraction analysis shows that these new high-pres…
Abstract The type of stress pulse produced when a liquid mass strikes a solid at high velocity is first examined. Compressible behaviour, giving rise to a sharp peak of pressure, is found to occur in the initial stages of the impact. The duration of this peak depends on the dimensions and impact velocity of the liquid…
Moths, by virtue of the loose scales that cover their wings and bodies, are admirably adapted to elude capture by orb-weaving spiders. Rather than sticking to the web, they may simply lose some of their scales to the viscid threads, and then fly on. Other insects, covered with detachable hairs or waxy powder, are simi…
The theory developed by Ziman for the scattering of phonons by electrons is extended to high temperatures using the formalism of Klemens and Callaway. The theory is applied to the experimental results recently published by Dismukes et al. on the effect of doping on the thermal conductivity of Ge-Si alloys. After subtr…