Abstract
THE following medals of the Franklin Institute, Philadelphia, were awarded on April 21: Franklin Medal and Honorary Membership to Prof. Harold C. Urey, professor of chemistry in Columbia University, for his discovery and production of heavy hydrogen, which has proved of immense importance in furthering research in chemistry, physics, and biology ; and to Dr. George Washington Pierce, for his development of “electrically squeezed” quartz crystals used to narrow the range of radio frequencies. The use of this principle in obtaining accurate oscillations has facilitated the construction of the most precise electric clocks. Elliot Gresson Medal to Prof. Charles M. Allen of Worcester Polytechnic Institute. His contribution to the field of hydraulics is a more rapid method of measuring the flow of water by adding a known amount of salt to the water and noting the time required for it to pass electrodes inserted in the pipe lines down-stream.
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The Franklin Institute: Medal Awards. Nature 152, 45 (1943). https://doi.org/10.1038/152045b0
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DOI: https://doi.org/10.1038/152045b0