File:A manual of practical medical electricity - the Röntgen rays and Finsen light (1902) (14597021239).jpg

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Identifier: manualofpractica00turn (find matches)
Title: A manual of practical medical electricity : the Röntgen rays and Finsen light
Year: 1902 (1900s)
Authors: Turner, Dawson
Subjects: X-Rays Electrophysiology Electrosurgery Electric Stimulation Therapy Electrotherapeutics X-rays Electrophysiology Electrosurgery
Publisher: New York : William Wood & Company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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Fig. 90.—Dr. Spamers Induction Coil, generates a current of more than 13,000 alternations persecond. This current is passed through an inductioncoil of high insulation (oil), in the circuit of the secondarywire of which is a battery of Leyden jars, which, by theoscillating character of their discharge, produce the enor-mous frequency of alternations. Similar effects on a humble scale may be produced andstudied by means of the following apparatus (ElihuThompson). To the secondary terminals of a large Ruhmkorffscoil (my own gives a ten-inch spark) are attached thick, High Potential Electricity 145 well-insulated wires, the one of which passes to the knobof a medium-size Leyden jar, and the other to its outercoating. The first wire is now carried on to terminate inthe knob of a metal discharger ; the second onejs__coiled
Text Appearing After Image:
o Cu to form a spiral of about ten turns, which is placed inside^a glass tube, such as a lamp-chimney, around which a well-insulated fine wire is coiled. The thick wire, after travers-ing the glass tube, is attached to the other limb of thedischarger (Fig. 93). 10 146 A Manual of Practical Medical Electricity The lamp-chimney and enclosed wire spiral are nowimmersed in a glass vessel half filled with petroleum ; theextremities of the fine wire coiled upon the chimney arebrought up to a convenient height in glass tubes ; the

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  • bookid:manualofpractica00turn
  • bookyear:1902
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Turner__Dawson
  • booksubject:X_Rays
  • booksubject:Electrophysiology
  • booksubject:Electrosurgery
  • booksubject:Electric_Stimulation_Therapy
  • booksubject:Electrotherapeutics
  • bookpublisher:New_York___William_Wood___Company
  • bookcontributor:Francis_A__Countway_Library_of_Medicine
  • booksponsor:Open_Knowledge_Commons_and_Harvard_Medical_School
  • bookleafnumber:168
  • bookcollection:medicalheritagelibrary
  • bookcollection:francisacountwaylibrary
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014

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