Abstract
FOR some years, there has been doubt concerning the value of the accelerating force acting on an electron in the ionosphere under the influence of an electric wave. In 1929, Hartree1 gave reasons for believing that to the field of the wave must be added a resultant field due to the other electrons present, and showed that this could be accounted for by including a term l of value 1/3 in the derivation of the dispersion equations. The equations then became closely analogous to those first deduced by Lorentz for the propagation of light in a body composed of molecules. The term was afterwards included in a great number of published works on wave propagation in the ionosphere.
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References
Hartree, D. R., Proc. Camb. Phil. Soc., 25, 47 (1929).
Darwin, C. G., Proc. Roy. Soc., A, 146, 17 (1934).
Booker, H. G., Proc. Roy. Soc., A, 150, 267 (1935).
Ratcliffe, J. A., Wireless Engineer, 10, 354 (1933).
Bajpai, R. R., and Mathur, K. B., Ind. J. Physics, 11, 165 (1937).
Appleton, E. V., NATURE, 133, 793 (1934).
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MARTYN, D., MUNRO, G. The Lorentz Polarization Term and the Earth's Magnetic Field in the Ionosphere. Nature 141, 159–161 (1938). https://doi.org/10.1038/141159b0
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DOI: https://doi.org/10.1038/141159b0
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