PROF. BRAGG in a recent letter (NATURE, April 16) credits me with the admission that the experiments I made on the intensity of secondary (scattered) X-rays are not so contrary to the neutral pair theory as I at first supposed. Will you permit me to correct this by saying that all the evidence I have obtained has verified the ether pulse theory in a more striking way than I ever anticipated, and I cannot think of a single experimental result obtained in researches on secondary X-rays which gives any support to his theory?
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Journal of Synchrotron Radiation (2015)
Acta Crystallographica Section A Foundations and Advances (2015)
Journal of Electron Spectroscopy and Related Phenomena (1977)