Now showing items 1-9 of 9
The Hydrogen Isotope Exchange Reaction
(The American Institute of Physics, 1940-03)
The possibility of deriving the equilibrium constants for the higher deuterium substitutions from the isotope exchange coefficient is examined with the aid of calculations on the ammonia and methane reactions with water. ...
The Infra‐Red Absorption Spectrum of Methyl Amine
(The American Institute of Physics, 1940-03)
The parallel type methyl amine band at 10μ has been resolved. Its center is at 1045.27 cm—1, and the very regular structure of its P and R branches indicates a close approximation to axial symmetry. The mean of the two ...
On the theory of cosmic-ray showers I the furry model and the fluctuation problem
(Elsevier, 1940-04)
The main problems regarding the shower formation by fast electrons are reviewed on the basis of a simplified model first proposed by Furry ( S S 1 and 2). A general method is developed for calculating the fluctuation in ...
Transmission and Reflection of Plastics and Metal Blacks in the Far Infra‐Red
(The American Institute of Physics, 1940-11)
Transmissions and reflections have been measured at nine wave‐lengths between 20.7μ and 152μ for a number of plastics and special surfaces. The residual rays from crystals were used as sources of approximately monochromatic ...
The Vibration Spectra of Hydrazoic Acid, Methyl Azide, and Methyl Isocyanate The Thermodynamic Functions of Hydrazoic Acid
(The American Institute of Physics, 1940-05)
The vibration spectra of hydrazoic acid, methyl azide, and methyl isocyanate have been investigated in the spectral region between 2 and 20μ. Correlation of the spectra of these structurally similar molecules has made ...
Spectrochemical Analysis of Sheet Steel at the Great Lakes Steel Company
(The American Institute of Physics, 1940-07)
Introduction to the Problem of the Isochronous Hairspring
(The American Institute of Physics, 1940-12)
Deviations from isochronism for the system of hairspring and balance wheel are treated by a method due to Haag. The results are given a geometrical interpretation. It is shown that the deviations are related to the ...
The Design of a Magnetic Beta‐Ray Spectrometer
(The American Institute of Physics, 1940-01)
A magnetic beta‐ray spectrometer of high resolution has been constructed. The theory of the resolution of this instrument has been investigated in detail and applied to the design of the slit system. The effects of scattering ...
The Rotational Structure of the Hydrazoic Acid Bands in the Photographic Infra‐Red
(The American Institute of Physics, 1940-02)
The third and fourth harmonics of the N☒H stretching frequency in hydrazoic acid, at 9547.31 and 12,412.19 cm—1, respectively, have been studied photographically under high dispersion. The rotational structure has been ...