A manual of practical medical electricity - the Röntgen rays and Finsen light (1902) (14803565373)

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. 144.—Wehnelt Discharge. fixed contact breaker, then, cannot be used for any lengthof time. I next tried a roller, and found that so long as itwas rotated so as to cause it to continually present afresh separating surface, it wore away evenly all round,and that it could thus be employed for an indefinite 332 A Manual of Practical Medical Electricity length of time. I now made both the contact pieces ofmetal rollers, held together by a spring, and I arrangeda lifting cam in such a way that while it separated therollers, it also caused them to rotate, for this latter point
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is essential. The interrupter can be obtained from Baird,Lothian Street, Edinburgh. When this interrupter is used in air, the secondary dis-charges are feeble ; immersed in water a much better effect ROntgen X Rays 333