Science and research. Mineral prospecting. A ground comparator will reveal the presence of an ore body under the surface of the earth by measuring the total intensity and the plane of polarization of the secondary electro-magnetic field set up by the ore body. These students are using an adjustable coil of copper wire which acts as an electrical transformer, and may be tilted to determine the minimum and maximum intensity of the field. They are conducting an experiment in electronics, taught in the department of geophysics at a famous mining engineering school. They will apply the knowledge they are acquiring to airplane detection and anti-submarine warfare. Colorado School of Mines, Golden, Colorado
Summary
Public domain photograph related to electrical equipment, industrial development, free to use, no copyright restrictions image - Picryl description
Tags
Date
01/01/1942
Contributors
Feininger, Andreas, 1906-1999, photographer
United States. Office of War Information.
Location
Source
Library of Congress
Copyright info
Public Domain