Abstract
PROF. E. V. APPLETOJST, in the Bakerian Lecture before the Royal Society, delivered on June 10, surveyed the information derived from radio sounding of the ionized regions of the upper atmosphere and compared the results with those derived from a theory of simple layer formation by solar ionizing radiation, travelling rectilinearly and attenuated according to a mass-absorption law. Such a formation is called a ‘simple region’. The comparisons are concerned chiefly with the variation of maximum electron content with solar radiation angle of incidence X with the total conductivity for direct currents such as determines the quiet-day magnetic variations and with the high-frequency absorption of radio waves traversing such a region, the two latter quantities being, to some extent, related.
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Regularities and Irregularities in the Ionosphere. Nature 139, 1076 (1937). https://doi.org/10.1038/1391076a0
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DOI: https://doi.org/10.1038/1391076a0