Now showing items 51-60 of 69
The Electron‐Micrographic Structure of Shadow‐Cast Films and Surfaces
(The American Institute of Physics, 1949-01)
The lower limit of size of biological objects which can be photographed with the electron microscope, by the aid of shadow‐casting, is shown to depend upon the smoothness of substrate upon which they can be mounted, and ...
The Infra‐Red Absorption Spectrum of Propane
(The American Institute of Physics, 1941-07)
Of the twenty‐seven internal degrees of freedom of propane, all nondegenerate, twenty‐two may appear as fundamental absorption bands. These bands fall into three symmetry classes, designated A1, B1 and B2, and distinguishable ...
Fields from Fluid Flow Mappers
(The American Institute of Physics, 1949-08)
Fluid flow within the streamline (viscous) range, made visible by appropriate means, may be made to simulate fields occurring in electrostatic, magnetic, electric current, heat flow, chemical diffusion, and other situations. ...
The Growth and Structure of Thin Metallic Films
(The American Institute of Physics, 1949-04)
The structure of thin metallic films was studied by means of electron diffraction and electron microscopy. Microcrystal size can be correlated with the melting point of the metals, those with high melting points producing ...
Stabilization and Binding of Quantized Radicals
(The American Institute of Physics, 1942-12)
An Experimental and Theoretical Investigation of the Skeletal Frequencies of the Paraffin Hydrocarbons and the Far Infra‐Red Spectrum of Carbon Tetrachloride
(The American Institute of Physics, 1949-04)
The far infra‐red spectra of the paraffin hydrocarbons and of carbon tetrachloride have been investigated. The following bands were located: propane at 370.6 cm−1, n‐butane at 215 cm−1, and carbon tetrachloride at 315 cm−1, ...