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File:Design and performance of magnets in the automatic telephone (1912) (14753719454).jpg

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English:

Identifier: designperformanc00hays (find matches)
Title: Design and performance of magnets in the automatic telephone
Year: 1912 (1910s)
Authors: Hays, Don Llewelyn Thvedt, Christian Bernhard
Subjects: Electromagnets Electromagnets Telephone, Automatic Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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—CHRONOGRAPH RECORD--The aooompaning chrono-graph reoord shows the ratio oftime of make and break to thetime of one seoond. The drumon whioh the record was taken re.volved in the direction indicatedby the arrow. Length ABW includes threewave3 (on red line) each of whichrepresents a make and a BreakIn an eleotrio circuit, CD is2.02 inches in length and, at therate of travel of the drum, in -dioates one seoond. AB, there-fore, whioh is 0.55 in. in lengthis 0.55 — 2.02 = 0.272 sec.For a single wave, therefore,thetime of make and break is onethird of this period, or O.272 _ 3.0 s O.0907 sec.That is, the time of make andbreak of the oirouit containinga oertain set of magnets is0.0907 seoond. SUMMARY It would seem that a more extensive test of magnets under agreater variety of conditions should be made in order to determinethe best design of magnet for any given oonditions. Determinationsshould be made as to proportion of diameter and length of magnet,and effeot of dimensions upon the i

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https://www.flickr.com/photos/internetarchivebookimages/14753719454/

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Flickr tags
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  • bookid:designperformanc00hays
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Hays__Don_Llewelyn
  • bookauthor:Thvedt__Christian_Bernhard
  • booksubject:Electromagnets
  • booksubject:Telephone__Automatic
  • booksubject:Theses
  • bookcontributor:University_of_Illinois_Urbana_Champaign
  • booksponsor:University_of_Illinois_Urbana_Champaign
  • bookleafnumber:48
  • bookcollection:university_of_illinois_urbana-champaign
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014


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