THERE have recently appeared a number of articles in foreign periodicals, and of footnotes in treatises on magnetism concerning gyromagnetic measurements, which, perhaps unintentionally, show three main tendencies. First, they tend to obscure the fact that credit is certainly due to O. W. Richardson, who was the first to show that, if the electron is responsible for ferro-magnetism, then it ought to be possible to make quantitative measurements in gyromagnetism. Secondly, they tend to disregard much of the earlier work on the subject, to view certain results as merely approximate and to neglect much of the latest work on the subject. Thirdly, they suggest that important sources of error were entirely overlooked by some workers. Consequently, it seems desirable to examine the present position so far as is possible in a short article.
Helvetica Physica Acta, 1932.
NATURE, 130, 891, Dec. 10, 1932.
Phys. Z., March 1, 1934.
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Physical Review (1951)
Reports on Progress in Physics (1936)
Reviews of Modern Physics (1935)
Transactions of the American Institute of Electrical Engineers (1935)