Abstract
LONDON. Royal Society, February 7.—Sir J. J. Thomson, president, in the chair.—Prof. O. W. Richardson: The photo-electric action of X-rays. In this paper the excitation of electron emission by X-rays is discussed in relation to our knowledge of the photo-electric action of other types of radiation. The ratio EK/EA of the energy EK emitted in the form of K secondary X-radia-tion to the energy EA of the primary radiation (wavelength λ) absorbed is found in the case of bromine to be expressed to within the degree of accuracy of the available observations by the formula
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Societies and Academies . Nature 100, 498–500 (1918). https://doi.org/10.1038/100498a0
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DOI: https://doi.org/10.1038/100498a0