Now showing items 171-180 of 183
Infrared Spectra of High Polymers. II. Polyethylene
(The American Institute of Physics, 1956-09)
The infrared spectrum of polyethylene has been obtained between about 3000 cm—1 and 70 cm—1, polarization measurements on oriented specimens having been obtained to about 350 cm—1. Assignments of the fundamentals are made ...
Experimental Demonstration of Electron‐Optical Regenerative Image Amplification
(The American Institute of Physics, 1958-05)
Hindered Rotation in Methyl Alcohol with Note on Ethyl Alcohol
(The American Institute of Physics, 1950-03)
The potential barrier to the internal rotation in methyl alcohol is recalculated from the entropy with the aid of new molecular dimensions generously provided by Burkhard and Dennison. The barrier calculation is examined ...
Remarks on Mizushima's Method for the Determination of Surface Area of Powders
(The American Institute of Physics, 1950-06)
New Approach to the Measurement of the Specific Heat of Gases
(The American Institute of Physics, 1955-06)
The variation of temperature with elevation within a body of gas in convective equilibrium in a gravitational field depends upon the specific heat. Specifically, the sum of the enthalpy and potential energy is the same for ...
Thermodynamics of Nonstoichiometric Nickel Tellurides. II. Dissociation Pressures and Phase Relations of Tellurium‐Rich Compositions
(The American Institute of Physics, 1958-10)
Dissociation pressures of tellurium over liquid and solid nickel telluride solutions have been measured with a silica Bourdon gauge at compositions corresponding to NiTe1.5, NiTe1.7, NiTe1.9, NiTe2.0, and NiTe9 at temperatures ...
Raman Spectroscopy in Liquid Ammonia Solutions. Vibrational Frequencies and Force Constants for Isotopic Species of the Borohydride Ion Having Tetrahedral Symmetry
(The American Institute of Physics, 1958-06)
All fundamentals of the ions 11BH4—, 11BD4—, 10BH4—, and 10BD4— have been observed in the Raman spectra of some alkali metal salts dissolved in liquid NH3 or ND3 at —50°C. A complete assignment of all observed frequencies ...