The solubility of small particles and the stability of colloids
L. F. Knapp, Trans. Faraday Soc., 1922, 17, 457 DOI: 10.1039/TF9221700457
Materials Literature
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Morphologie und Biologie der Algen
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CXV.—The system potassium sulphate–aluminium sulphate–water at 25°
H. T. S. Britton, J. Chem. Soc., Trans., 1922, 121, 982 DOI: 10.1039/CT9222100982
CCXXI.—The solubilities of the alkali formates and acetates in water
N. V. Sidgwick and J. A. H. R. Gentle, J. Chem. Soc., Trans., 1922, 121, 1837 DOI: 10.1039/CT9222101837
The mechanism of the catalytic action of platinum in the reactions 2Co + O2= 2Co2 and 2H2+ O2= 2H2O
THE MECHANISM OF THE CATALYTIC ACTION OF PLATINUM IN THE REACTIONS 2CO + 0, = 2C0, and 2H2+ 0, = aH,O. THE MECHANISM OF THE CATALYTIC ACTION OF PLATINUM IN THE REACTIONS 2CO + 0, = 2C0, and 2H2+ 0, = aH,O. BY IRVINGLANGMUIR. The reaction between hydrogen and oxygen in contact with a platinum surface has
THE SYNTHESIS OF INACTIVE PARA- AND ANTI-HYDROXYASPARTIC ACIDS (AMINOMALIC ACIDS)
The increasing recognition of the importance of the hydroxyamino-acids in protein chemistry is an incentive to their more complete investigation.The particular case of hydroxyaspartic acid or aminomalic acid is of interest for several reasons.It represents the lower homologue of p-hydroxyglutamic acid already identifi…
COMPARATIVE HYDROLYSIS OF GELATIN BY PEPSIN, TRYPSIN, ACID, AND ALKALI
A comparison has been made of the relative velocity of hydrolysis of the various peptid linkings of the gelatin molecule when hydrolyzed by acid, alkali, pepsin or trypsin. It has been found that: 1. Those linkages which are most rapidly split by pepsin or trypsin are among the more resistant to acid hydrolysis. 2. Th…
The Distinction between Intrinsic and Spurious Contact E.M.F.S and the Question of the Absorption of Radiation by Metals in Quanta.
Stopping potentials for photo-electrons from Na, K and Li surfaces, as determined with a Faraday cylinder in vacuo for monochromatic ultraviolet light, were found to be accurately the same for all. This result makes general the conclusion that the stopping potential for a given frequency is the same for all clean meta…
THE CATALYTIC OXIDATION OF CARBON MONOXIDE.1
ADVERTISEMENT RETURN TO ISSUEArticleNEXTTHE CATALYTIC OXIDATION OF CARBON MONOXIDE.1T. H. Rogers, C. S. Piggot, W. H. Bahlke, and J. M. JenningsCite this: J. Am. Chem. Soc. 1921, 43, 9, [1973]–1982Publication Date (Print):September 1, 1921Publication History Published online1 May 2002Published inissue 1 September 1921…
The Use of Graphs in Palaeontology
To illustrate the value of graphic methods when changes in a number of distinct structural elements are studied, examples may be taken from the Carboniferous corals. These are well suited to the purpose, because thin slices yield so much information and are easily measured. In Fig. 4 a diagrammatic section is shown of…
The Laws of Absorption of X-Rays.
Measurement of Absorption of X-rays.---The use of a filtered beam of rays can at best give only approximate values of the coefficients, for such a beam is not homogeneous. It is pointed out that logarithmic absorption is no proof of homogeneity. In these experiments homogeneous radiation was secured by using a Bragg s…
VISCOSITY OF GELATIN SOLUTIONS.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVISCOSITY OF GELATIN SOLUTIONS.Clarke E. Davis, Earle T. Oakes, and Harold H. BrowneCite this: J. Am. Chem. Soc. 1921, 43, 7, 1526–1538Publication Date (Print):July 1, 1921Publication History Published online1 May 2002Published inissue 1 July 1921https://pubs.acs.org/doi/10.…
THE SYSTEM COPPER: CUPRIC OXIDE: OXYGEN.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE SYSTEM COPPER: CUPRIC OXIDE: OXYGEN.H. S. Roberts and F. Hastings SmythCite this: J. Am. Chem. Soc. 1921, 43, 5, 1061–1079Publication Date (Print):May 1, 1921Publication History Published online1 May 2002Published inissue 1 May 1921https://pubs.acs.org/doi/10.1021/ja0143…
Graphical Determination of Hexagonal and Tetragonal Crystal Structures from X-Ray Data
Graphic Method for Interpreting X-Ray Patterns of Powders.---For each type of lattice the logarithms of the theoretical spacings of the different planes are plotted as functions of the axial ratio. Six such plots are reproduced, three for the hexagonal and three for the tetragonal system. By plotting the logarithms of…
THE OXIDATION OF CARBON MONOXIDE BY PASSAGE WITH OXYGEN OR AIR THROUGH THE SILENT DISCHARGE AND OVER OZONE DECOMPOSING CATALYSTS.1
ADVERTISEMENT RETURN TO ISSUEArticleNEXTTHE OXIDATION OF CARBON MONOXIDE BY PASSAGE WITH OXYGEN OR AIR THROUGH THE SILENT DISCHARGE AND OVER OZONE DECOMPOSING CATALYSTS.1Arthur B. Ray and F. O. AndereggCite this: J. Am. Chem. Soc. 1921, 43, 5, 967–978Publication Date (Print):May 1, 1921Publication History Published on…
X-Ray Crystal Analysis of Thirteen Common Metals
Crystal Structure of Thirteen Metals Determined by X-ray Analysis.---The author's method of powder analysis was used. In the case of anisometric substances, the crystal system and axial ratio were found by means of plots by the method described in the preceding ${\mathrm{paper}.}^{2}$ The lattices of chromium, molybde…
Die Stabilitätsverhältnisse der Glas‐ und Kristallphase des Siliziumdioxydes
Abstract Experimentell wurde bestimmt: Die Kristallisationswärme bei Zimmertemperatur von Christobalit, Quarz und Chalzedon und zwar als Differenz der Auflösungswärmen von Glas und Kristall in Flußsäure. Die mittleren spezifischen Wärmen bis herauf zum Schmelzpunkt. Der Schmelzpunkt des Christobalits zu 1696°.
Humidity Control by Means of Sulfuric Acid Solutions, with Critical Compilation of Vapor Pressure Data.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHumidity Control by Means of Sulfuric Acid Solutions, with Critical Compilation of Vapor Pressure Data.Robert E. WilsonCite this: Ind. Eng. Chem. 1921, 13, 4, 326–331Publication Date (Print):April 1, 1921Publication History Published online1 May 2002Published inissue 1 April…
Piezo-Electric and Allied Phenomena in Rochelle Salt
Electric Hysteresis in Rochelle Salt.---On the doublet theory of dielectric action, the dielectric displacement $D$, electric intensity $E$, and the polarization $P$ are analogous to $B$, $H$, and $I$ in the case of magnetism. Rochelle salt shows an electric hysteresis in $P$ analogous to the magnetic hysteresis in th…
Secondary Electron Emission from Copper Surfaces
Secondary Electrons from a Copper Surface Bombarded by Electrons.---The method used was to measure the current flowing to the bombarded plate as a function of the grid potential. By using sufficiently low pressures the ionization effect was made negligible. (1) The coefficient of secondary emission was found to increa…