Materials Literature
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This article outlines the reasons cotton fabrics shrink, and gives many numerical examples. The length of cotton fibers change less than 1 percent from 45 percent relative humidity to wet, but diameter swells 14 percent. Unlike wool or rayon, contraction of cotton fibers does not contribute to shrinkage. Yarns of ordi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Rate of Formation and the Dissociation of Calcium HydrideWarren C. Johnson, Morris F. Stubbs, Albert E. Sidwell, and Alphonse. PechukasCite this: J. Am. Chem. Soc. 1939, 61, 2, 318–329Publication Date (Print):February 1, 1939Publication History Published online1 May 2002…
From the equilibrium state of the whole system copper-nickel-silicon determined by the author, various sectional diagrams have been constructed. The following results are based on the experiments of the thermal and X-ray analyses as well as of the microscopic examination: Binary system as shown by M. G. Corson is not…
The first page of this article is displayed as the abstract.
Hydrogen peroxide was shown to be formed during the corrosion of aluminum and other metals in the presence of an excess of oxygen. The Russell effect of metals was found to be caused by the production of hydrogen peroxide and to provide a highly sensitive test for the formation of hydrogen peroxide at metal surfaces.…
R. Audubert, Trans. Faraday Soc., 1939, 35, 197 DOI: 10.1039/TF9393500197
J. M. Robertson, J. Chem. Soc., 1939, 232 DOI: 10.1039/JR9390000232
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSURFACE-ACTIVE PROPERTIES OF HEXAMETAPHOSPHATEG. B. Hatch and Owen RiceCite this: Ind. Eng. Chem. 1939, 31, 1, 51–58Publication Date (Print):January 1, 1939Publication History Published online1 May 2002Published inissue 1 January 1939https://pubs.acs.org/doi/10.1021/ie50349a…
P. A. Barrett, R. P. Linstead, G. A. P. Tuey and J. M. Robertson, J. Chem. Soc., 1939, 1809 DOI: 10.1039/JR9390001809
J. Chatt and F. G. Mann, J. Chem. Soc., 1939, 1622 DOI: 10.1039/JR9390001622
The Zeeman effects of the principal series lines of sodium and potassium in the range $n=10 \mathrm{to} 35$ are observed in absorption, using the new 60-inch cyclotron magnet. With a field of 27,000 gauss, the lines having $n$ in the neighborhood of ten show a normal triplet representing the complete Paschen-Back effe…
Certain types of electrostatic fields may be used as lenses to focus electron beams. The theory of these lenses is developed for electric fields that are symmetrical about a central axis. The introduction of two velocity functions exactly reduces the partial differential equations of electron motion to a series of ord…
The thermal conductivity K is derived in terms of the difference in temperature which, in the steady state, is set up between the axis and the surface of a rod or tube of the material when the latter is electrically heated in an evacuated enclosure. The electrical conductivity σ is derived in the course of the same ex…
G. S. Hartley and R. J. W. Le Fèvre, J. Chem. Soc., 1939, 531 DOI: 10.1039/JR9390000531
R. W. Gurney and N. F. Mott, Trans. Faraday Soc., 1939, 35, 69 DOI: 10.1039/TF9393500069
The first page of this article is displayed as the abstract.
The authors have continued their efforts to absolve the x-ray method of determining the electronic charge of the criticism that Bragg reflection determines the lattice dimensions in only a very shallow surface region whereas the density determinations have been made on a much larger volume of crystal. In earlier work…
Oscillographic studies have been made of the currents in negative point to plane coronas in air. The oscillograms obtained indicate that the negative corona current is composed of discrete pulses whose magnitude and frequency have a definite relationship to the corona current, point size and gas pressure. The frequenc…
described the isolation of water-soluble peptides from the brown alga Pelvetia canaliculata forma libera S. M. Baker and the red alga Corallina officinalis Lirn. It was then suggested that the presence of peptides in algae was due to a lack of metabolic balance determined either by desiccation or by low illumination.…
The paths of charged particles traversing a portion of an ideal spherical condenser are worked out. The section of the condenser considered is bounded by two rays, enclosing an angle $\ensuremath{\Phi}$, from the common center of curvature, $O$, of the equipotential surfaces. It is shown that a group of particles, hom…