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British Journal of Radiology

Matter and Space

Published Oct 1, 1930• 0 citations
Publisher

Abstract

Most experts at the Meeting of the British Association at Bristol are reserving opinion about the paper read by Dr. Dirac, enthusiastically but provisionally blessed by Sir Oliver Lodge, until they have an opportunity of studying the full memoir in the Proceedings of the Royal Society. But Dr. P. A. M. Dirac is a young Cambridge man whose published work on de Broglie's theory of wave mechanics was regarded as a very striking contribution, and anything he says deserves serious attention.

DOI
10.1259/0007-1285-3-34-455-b

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Most experts at the Meeting of the British Association at Bristol are reserving opinion about the paper read by Dr. Dirac, enthusiastically but provisionally blessed by Sir Oliver Lodge, until they have an opportunity of studying the full memoir in the Proceedings of the Royal Society. But Dr. P. A. M. Dirac is a young Cambridge man whose published work on de Broglie's theory of wave mechanics was regarded as a very striking contribution, and anything he says deserves serious attention.
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To members of the British Institute of Radiology the cathode ray is probably most familiar as the necessary antecedent of X rays. You are interested in them chiefly as a means to an end, but the cathode rays had a very real intrinsic interest in the nineties of last century. It was the study of the beam of light in a low-pressure discharge tube which led to the recognition of the existence of a universal constituent of matter—the electron—and I hope to show that the importance of cathode rays for the study of fundamental problems in physics is not yet exhausted. The cathode rays still form in many respects the most convenient way of studying the properties if electrons. Of recent years our views on the nature of these electrons have undergone a striking change, as a result of the brilliant inspiration of Prince Louis de Broglie, who has been rewarded with a Nobel Prize. He founded the theory which is now dominant in physics under the name of wave mechanics, and which is a general theory of the behaviour of any form of particle. According to this view all particles are associated with some form of wave, the properties of which determine much of the behaviour of the particle. This theory was originally devised by de Broglie from considerations based upon relativity.
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