Letter | Published:

Dielectric Loss in a Polar Gas near its Critical Point

Naturevolume 169page1106 (1952) | Download Citation



IN the course of some measurements of the dielectric polarization of compressed methyl fluoride, we have noticed the appearance of strong dielectric absorption near the critical point. The absorption increases rapidly with the density of the gas and it rises with increasing frequency over the range we investigated (1–5 megacycles).

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    David, H. G., Hamann, S. D., and Pearse, J. F., J. Chem. Phys. (in the press).

  2. 2

    Cawood, W., and Patterson, H. S., J. Chem. Soc., 2180 (1932).

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    Debye, P., “Polar Molecules” (Reinhold, New York, 1929).

  4. 4

    Phillips, P., Proc. Roy. Soc., A, 87, 48 (1912).

  5. 5

    Bird, R. B., Spotz, E. L., and Hirschfelder, J. O., J. Chem. Phys., 18, 1395 (1950).

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  1. High Pressure Laboratory, Division of Industrial Chemistry, Commonwealth Scientific and Industrial Research Organization, Sydney University Grounds, Australia

    • H. G. DAVID
    • , S. D. HAMANN
    •  & J. F. PEARSE


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