Now showing items 41-50 of 183
Infrared Spectra of High Polymers. VIII. Polyvinyl Nitrate
(The American Institute of Physics, 1958-10)
The infrared spectrum of polyvinyl nitrate has been obtained in the extended region of 70 to 3600 cm−1. Polarized infrared measurements were made on oriented specimens in the range of 350 to 3600 cm−1. Since x‐ray diffraction ...
Beta Gauge for Localized Measurements on Thin Films
(The American Institute of Physics, 1956-06)
Effect of Intermolecular Interactions between CH Frequencies on the Infrared Spectra of N‐Paraffins and Polythene
(The American Institute of Physics, 1954-12)
A systematic study has been made of the infrared absorption band near 725 cm—1 which arises from the rocking vibration of methylene groups in n‐paraffins and in polyethylene. In unoriented crystals of n‐paraffins, this ...
Intermolecular Potentials of Argon, Methane, and Ethane
(The American Institute of Physics, 1958-06)
The viscosities of argon, methane, and ethane are reported over a temperature range from ∼210°K to ∼475°K. In conjunction with second virial coefficient data, the viscosities have been employed to estimate the potential ...
Surface‐Wave Propagation Over a Coated Plane Conductor
(The American Institute of Physics, 1951-04)
A TM‐type wave is assumed propagated parallel to the surface of a plane conductor coated with a thin layer of dielectric. This wave is similar to the wave propagated over a dielectric‐coated wire of circular cross section, ...
Theory of Frequency Modulation Noise in Tubes Employing Phase Focusing
(The American Institute of Physics, 1955-04)
Oscillators employing phase focusing such as magnetrons have fairly well defined spokes whose rotational speed is proportional to the oscillation frequency. Each spoke is composed of a finite number of electrons having ...
Inhibition of Hydrodynamic Instability by an Electric Current
(The American Institute of Physics, 1959-03)
The inhibition of instability of a viscous fluid contained in a circular cylinder and heated from below by an electric current is investigated. Previous results indicate that, for a thermally nonconducting wall, the critical ...
Kinetics of the Thermal Decomposition of Dimethylmercury. II. Carbon‐13 Isotope Effect
(The American Institute of Physics, 1959-03)
The C13 kinetic isotope effect in the pyrolysis of gaseous dimethylmercury has been studied in the presence and absence of cyclopentane inhibitor from 290–375°C for the inhibited and 290–350°C for the uninhibited reactions. ...
Applications of Polystyrene Particles in Conjunction with Shadow Casting to the Study of Polished Metallic Surfaces
(The American Institute of Physics, 1951-06)
This is a report of a study of polished metallic surfaces with the electron microscope. Negative collodion replicas were used in this experiment. The determination of width and depth of scratches by means of polystyrene ...