Dielectric dispersion in pure polar liquids at very high radio-frequencies I. Measurements on water, methyl and ethyl alcohols

Author:

Abstract

The results are given of some measurements of the absorption coefficient and refractive index of water, methyl and ethyl alcohols at wave-lengths of 6·2 mm, 1·24 cm and 3·21 cm over the temperature range —10 to 50°C, including some observations on water in the supercooled state. The method used is based upon the fact that the rate of attenuation of radio-frequency energy along a wave-guide filled with the liquid is dependent upon both the absorption coefficient and the refractive index when the guide is operated near to the cut-off condition. The electrical characteristics of water vary in a continuous manner through the normal freezing-point of 0°C down to at least —8°C. The measurements indicate that both alcohols, like water, have relatively high atomic polarizations.

Publisher

The Royal Society

Subject

Pharmacology (medical)

Reference8 articles.

1. Coe J. R. & Godfrey T. B. 1944

2. J;Collie C. H.;Appl.,1948

3. 60 145.

4. Debye P. 1929 Polar molecules. New York: The Chemical Catalog Co. Inc.

5. Saxton J. A. 1946a Meteorological factors in radio-wave propagation p. 292. London: The Physical Society.

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