Abstract
THE electrical properties of the materials forming the earth‘s surface have always been of interest to the radio physicist and communication engineer, since the propagation of long and medium waves is markedly dependent upon the absorbing effect of the ground. At shorter wave-lengths, for which the radiation can be transmitted more freely through the lower or upper atmosphere, the reflexion coefficient of the earth‘s surface plays an important part in the propagation of the waves. More recently, the varying reflexion coefficient due to the different electrical properties of the different portions of the earth‘s surface has been used with conspicuous success in a radar method of navigation.
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Electrical Properties of Soil and Water at Centimetre Wave-Lengths. Nature 161, 73 (1948). https://doi.org/10.1038/161073a0
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DOI: https://doi.org/10.1038/161073a0