File:The Measurement of Magnetic Hysteresis (1902) (14592069200).jpg

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English:

Identifier: philtrans05780600 (find matches)
Title: The Measurement of Magnetic Hysteresis
Year: 1902 (1900s)
Authors: Searle, G. Bedford, T.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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position. L 2 76 MESSRS. G. F. C. SEARLE AND T, G. BEDFORD Experiments on SteeL § 54. W — Bq Curve for Zero Stress.—The first set of experiments was madeupon a steel rod 09125 sq. centim. in section. To find how Bq and W depend uponHq, when there is no torsion, we made a series of observations for Bq and W, using thekey of § 31, and varying Hq from 37*4 to 5*0; the results are given in the tablebelow. The electro-dynamometer was not sensitive enough to allow us to work withmagnetic forces less than 5 units. These observations will serve as an example ofthe application of the method described in this paper to determine the manner inwhich W depends upon Bq, when Bq is made to vary by changing Hq, the stressbeing constant. The curve representing these observations is shown in fig. 8. Thenumbers placed along the curve show the values of Hq for which the values of Bq andWq were found. The curves (1) to (4) are considered in § 66, 60000 46000 4o6oo 35000 30000 26000 16000 10000 BOOO
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Hysteresis W 20000 2000 4000 6000 8000 10000 12000 14000 16000 Fig. 8. ON THE MEASUEEMENT OF MAGNETIC HYSTERESIS. 11 Hq. Bo- W. Hq. Bq. W. Ho- Bo. W. 37-40 14550 47050 18-00 10480 23800 8-00 2870 2780 32-05 13980 42600 16-00 9360 19100 7-00 2110 1700 27-95 13350 38200 14-00 8080 14820 6-00 1400 780 25-18 12800 34900 12-00 6390 10020 5-00 950 190 22-00 12010 30600 10-00 4600 5830 20-00 11160 26600 9-00 3690 4100 60000 45000 § 55. Effect of Torsion, tvitJiin the Elastic Limit, upon the Steel Rod.—Thes teel rodwas now subjected to torsion in the way described in § 53. A load not exceeding2000 grammes was hung from the rim of the wheel and was increased and diminishedby steps of 100 or 200 grammes, care being taken to make the changes in the loadwith as little jerking as possible. Foreach cycle of loading and unloading themaximum magnetic force Hq was keptat a constant value. In every case,except possibly that of Hq = 37*4, thewire was put through several cycles oftwist in which the l

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Searle, G.;

Bedford, T.
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Flickr tags
InfoField
  • bookid:philtrans05780600
  • bookyear:1902
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Searle__G_
  • bookauthor:Bedford__T_
  • booksubject:Proceedings_of_the_Royal_Society_of_London
  • booksubject:Philosophical_Transactions_of_the_Royal_Society
  • bookpublisher:Royal_Society_of_London
  • bookcontributor:
  • booksponsor:
  • bookleafnumber:43
  • bookcollection:philosophicaltransactions
  • bookcollection:additional_collections
Flickr posted date
InfoField
29 July 2014

http://rsta.royalsocietypublishing.org/content/198/300-311:

The Measurement of Magnetic Hysteresis G. F. C. Searle, T. G. Bedford Phil. Trans. R. Soc. Lond. A 1902 198 33-104; DOI: 10.1098/rsta.1902.0002. Published 1 January 1902


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