Now showing items 1-10 of 10
Infra‐Red Spectra—Observation and Uses
(The American Institute of Physics, 1939-11)
A nontechnical description is presented of methods of observation now in general use in infra‐red spectroscopy, together with some typical examples of their use.
The Infra‐Red Absorption Spectrum of Boron Trifluoride
(The American Institute of Physics, 1939-07)
The infra‐red absorption spectrum of BF3 has been studied under high resolution from 400 cm—1 to 3000 cm—1. The active fundamentals v2, v3 and v4 and the overtone 2v3 have been observed. The parallel fundamental v2 has ...
The Potential Functions of the Methyl Halides
(The American Institute of Physics, 1939-07)
The problem of the potential functions of the methyl halides is re‐examined in an attempt to find a function which is both adequate and simple. A valence form of potential was tried which contained four constants: k1, the ...
A Complete Geiger‐Müller Counting System
(The American Institute of Physics, 1939-01)
Constructional details are given of a complete Geiger‐Müller counting system consisting of a stabilized high voltage supply, Neher‐Harper coupling circuit and vacuum‐tube scale‐of‐eight feeding a Cenco counter stage. The ...
The Centrifugal Distortion of Axial Molecules
(The American Institute of Physics, 1939-07)
The theory of the semi‐rigid rotator developed by Wilson and Howard has been applied to the axial molecules YX3 and ZYX3. It is found that the change in rotational energy, δW, caused by the centrifugal distortion, can be ...
A Magnet Current Stabilizer
(The American Institute of Physics, 1939-10)
A precision current stabilizer is described which is suitable for controlling an electromagnet. The circuit is adaptable to a wide range of current values. Applications to a cyclotron and to a beta‐ray spectrometer are ...
Qualitative and Quantitative Chemical Analysis by Line Emission Spectra
(The American Institute of Physics, 1939-11)