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VI.—Experiments on the Transverse Effect and on some Related Actions in Bismuth

Published online by Cambridge University Press:  06 July 2012

J. C. Beattie
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Extract

Clerk Maxwell, in his Electricity and Magnetism, vol. i. § 304, makes the following remark about the rotatory coefficient:—“It should be found, if anywhere, in magnets which have a polarisation in one direction, probably due to a rotational phenomenon in the substance.”

The current which should arise from such a coefficient was first observed by Hall. He passed a current through a strip of metal; he then found two points on opposite sides of the strip, which, while the current was flowing, were at the same potential, and which therefore indicated no current when joined to a galvanometer. The plate was next brought into a uniform magnetic field, and when everything was steady the two points previously at the same potential were no longer so, and a current flowed through the galvanometer. This effect is observable in all conductors.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 38 , Issue 1 , 1897 , pp. 225 - 240
Copyright
Copyright © Royal Society of Edinburgh 1897

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References

page 225 note * Wiedbmann's Annalen, 1893, Bd. 49, S. 257.

page 225 note † Wiedemann's Annalen, 1889, Bd. 36.

page 225 note ‡ By Hall effect is meant a transverse effect proportional to the first power of the magnetisation. See “On Relation between the Variation of Resistance in Bismuth, &c.,” Trans. R.S.E., vol. xxxviii.

page 227 note * Sitzungsbericht der Köng, bayerischen Akedamie der Wissenchaft, 1892, Bd. xxii. Heft iii. § 371Google Scholar.

page 228 note * The galvanometer reading obtained in this case, divided by the strength of the primary current, is called in the results the shunted transverse.

page 235 note * Sitz. bericht der kais. Akad. der Wissenschaft, ii. Abth., 1887, Bd. 96.

page 240 note * Phil. Mag., 1884.

page 240 note † Wiedemann's Annalen, 1887, Bd. 31.