Now showing items 1-10 of 12
On the Notion of Pressure in a Canonical Ensemble
(The American Institute of Physics, 1950-08)
Recently a controversy has arisen between J. De Boer and H. S. Green concerning the notion of pressure in a canonical ensemble. According to Green, only classically is the pressure as derived from the partition function ...
Energy Levels and Thermodynamic Properties of the Internal Rotator
(The American Institute of Physics, 1950-04)
To facilitate the calculation of the thermodynamic properties of internal rotators lying outside the limits of available tabulations, methods of determining the energy levels are studied for the purpose of finding the most ...
The Structure of Polymer‐Plasticizer Gels As Shown by the Electron Microscope
(The American Institute of Physics, 1950-02)
Improving Differential Amplifier Rejection Ratios
(The American Institute of Physics, 1950-08)
The Infra‐Red Absorption Spectrum of Diborane
(The American Institute of Physics, 1950-05)
The infra‐red absorption spectrum of diborane has been examined under high resolution from 3.7μ to 30μ with automatic recording grating spectrometers. The rotational fine structure in two bands of each of the three types ...
The Design of a Magnetic Focusing Coincidence Spectrometer
(The American Institute of Physics, 1950-08)
Design and operating features are described for a semi‐circular magnetic focusing coincidence spectrometer. The primary function of the spectrometer is that of determining whether or not two different radiations from a ...
Thermodynamic Properties of the Internal Rotation in Methyl Alcohol Vapor from 200 to 500°K
(The American Institute of Physics, 1950-08)
At ordinary and lower temperatures the thermodynamic properties of the methyl alcohol internal rotation are beyond the limits of available tabulations. For any internal rotator, of a given symmetry, with a fixed moment of ...
On the Photographic Reciprocity Law Failure and Related Effects. II. The Low Intensity Sequence Effect
(The American Institute of Physics, 1950-04)
A quantitative theory of all details of the low intensity sequence effect is given on the basis of the following assumptions. A monatomic Ag speck is unstable against thermal agitation, a diatomic speck is stable, but for ...
The Use of Spraying Methods and of Volatile Suspending Media in the Preparation of Specimens for Electron Microscopy
(The American Institute of Physics, 1950-01)
Developments have been made in the use of spraying methods in the preparation of specimens for examination in the electron microscope. At the same time, two wholly volatile diluents, containing electrolytes and adjusted ...