Abstract
IN recent publications, Friend and Colwell1,2 have reported the reflection of radio waves at vertical incidence from temperature inversions in the troposphere, and have estimated the reflection coefficient to be of the order of 10-3 at a frequency of 2398 kc./s. On the assumption that atmospheric reflections are due to discontinuities in water content, Piddington3 has calculated the reflection coefficient to be not greater than 10-4.
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Colwell, R. C., and Friend, A. W., NATURE, 144, 31 (1939).
Friend, A. W., and Colwell, R. C., Proc. Inst. Rad. Eng., 27, 626 (1939).
Piddington, J. H., Proc. Phys. Soc., 51, 129 (1939).
Englund, C. R., Crawford, A. B., and Mumford, W. W., Bell Syst. Tech. J., 17, 489 (1938).
See for example, Wilcken, J. A., Phil. Mag., 49, 107 (1925). Rawer K., Ann. Phys., 35, 385 (1939).
Darwin, C. G., Trans. Camb. Phil. Soc., 23, 137 (1924).
Hartree, D. R., Proc. Camb. Phil. Soc., 25, 97 (1929).
Försterling, K., Ann. Phys., 11, 1 (1931).
Appleton, E. V., and Piddington, J. H., Proc Roy. Soc., A, 164, 467 (1938).
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STOODLEY, L. Radio Wave Reflections in the Troposphere. Nature 145, 743 (1940). https://doi.org/10.1038/145743a0
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DOI: https://doi.org/10.1038/145743a0
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