File:A manual of practical medical electricity - the Röntgen rays and Finsen light (1902) (14781330114).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. 88.—Voliolinis Baitery. Electricity of High Potential and of Great Frequencyof Alternation. The electrical phenomena exhibited by Tesla and ElihuThompson are, from their physiological effects, not with-out much medical interest. These will be referred to High Potential Electricity 143 farther on, but a few simple remarks here about the physicsof the phenomena may be an advantage. The essential differences between the current that Teslauses and that furnished by an ordinary dynamo or induc-
Text Appearing After Image:
o tion coil are that the alternations of his current are in-conceivably rapid, and the E. M. F. exceedingly high.Thus the alternations produced by a good induction coilmaybe about 200 per second, and the E. M. F. from 500 144 A Manual of Practical Medical Electricity to 20,000 volts ; while the alternations of the current usedby Tesla vary from about half a million to ten or moremillions per second, and the E. M. F. from 100,000 to amillion or more volts. To produce these effects, Tesla makes use of an alter-nating current dynamo with a stationary armature aboutthirty inches in diameter, and provided with about 380coils. A thin disc of iron carrying 380 magnets connectedin series,;.and driven by a motor at 2,000 revolutions,

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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:166
  • bookcollection:medicalheritagelibrary
  • bookcollection:francisacountwaylibrary
  • bookcollection:americana
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30 July 2014

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