Unpublished paper, 'The influence of stress and strain on the physical properties of matter. Part III - Magnetic induction' by Herbert Tomlinson
Reference number: AP/64/13
Date: 1887
Description
Tomlinson presents the results of experiments extending over a period of ten years on the effects of stress and strain on the magnetic permeabilities of iron, nickel, and cobalt. Two methods are described. In one, the metal to be tested -- usually in the form of wire -- is placed with its axis coincident with that of a magnetising solenoid, in most cases of considerable length as compared with the diameter of the wire. A secondary coil is wrapped around the central portion of the solenoid. A similar pair of primary and secondary coils, with a similar piece of the same specimen of metal, is balanced against the first by means of resistance coils, so that on closing the magnetising circuit no deflection is produced in a delicate Thomson's galvanometer suitably connected up with the resistance coils and secondary coils. The alteration of magnetic permeability produced by stress was measured by the change necessary to be made in the resistance coils in order to restore the balance. In the second method, the resistance coils are dispensed with, and only a metal core used in one of the two pairs of solenoids which are connected in series each to each. The arrangements are such that the pairs of solenoids, when without any cores, balance each other’s effects on the galvanometer, so that the deflections of the latter instrument are due only to the magnetic permeability of the metal to be tested. The alteration of permeability is in this case measured by the change of deflection produced in the Thomson’s galvanometer. The second method is the one principally employed in Tomlinson's experiments.
Includes five pages of drawings of experimental equipment and 21 charts of experimental results.
Subject: Physics / Electromagnetism
Received 17 March 1887. Read 31 March 1887. Communicated by William Grylls Adams.
Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 42 of the Proceedings of the Royal Society as 'The influence of stress and strain on the physical properties of matter. Part III. Magnetic induction'.
- Reference number
- AP/64/13
- Earliest possible date
- 1887
- Physical description
- Ink and graphite pencil on paper
- Page extent
- 193 pages
- Format
- Manuscript
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Herbert Tomlinson, Unpublished paper, 'The influence of stress and strain on the physical properties of matter. Part III - Magnetic induction' by Herbert Tomlinson, 1887, AP/64/13, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/ap_64_13/unpublished-paper-the-influence-of-stress-and-strain-on-the-physical-properties-of-matter-part-iii-magnetic-induction-by-herbert-tomlinson, accessed on 08 November 2024
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Related Publications
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III. The influence of stress and strain on the physical properties of matter. Part III. Magnetic induction External link, opens in new tab.
Date: 31st December 1887
DOI: 10.1098/rspl.1887.0045
Related Records
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Referee's report by James Alfred Ewing, on a paper 'The influence of stress and strain on the physical properties of matter.— Part III. Magnetic induction (continued).—The internal friction of nickel, and cobalt, studied by means of magnetic cycles of very minute range' by Herbert Tomlinson
Creator: James Alfred Ewing Reference number: RR/10/311 -
Referee's report by John Hopkinson, on a paper 'The influence of stress and strain on the physical properties of matter.— Part III. Magnetic induction (continued).—The internal friction of nickel, and cobalt, studied by means of magnetic cycles of very minute range' by Herbert Tomlinson
Creator: John Hopkinson Reference number: RR/10/312
Hierarchy
This item is part of:
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Archived papers: volume 64, scientific papers submitted the Royal Society unpublished or abstracted, 1886-1887
1886-1887 Reference number: AP/64
Related Fellows
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William Grylls Adams
Communicator -
Herbert Tomlinson
Author
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Archived Papers
Dates: 1768-1989
The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.View collection