The Nature of X-Rays

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IN a letter to NATURE of July 30 Prof. Bragg tries to show that his neutral-pair theory of X-rays may form the basis of an explanation of the secondary X-ray phenomena which I briefly summarised in an earlier letter (May 7). He, however, neglects the consideration of so much important evidence that I cannot attempt to reply in detail. In reply to his discussion of statements (3), (6), and (5), I need only state that he has confused two distinct types of secondary X-radiation, and that his statement of Mr. Crowther's results is inaccurate when applied, as he applies it, to the scattered radiation alone. (May I also be permitted, in passing, to point out that both the general results attributed to Mr. Crowther had been published by the writer previous to the publication of Mr. Crowther's paper?)

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BARKLA, C. The Nature of X-Rays. Nature 78, 665 (1908) doi:10.1038/078665a0

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