The electro-therapeutic guide, or, A thousand questions asked and answered (1907) (14593036518)

Identifier: electrotherapeut00benn (find matches)

Title: The electro-therapeutic guide, or, A thousand questions asked and answered

Year: 1907 (1900s)

Authors: Bennett, Homer Clark, 1865-1928

Subjects: Electrotherapeutics Electricity in medicine Ohm's law X-rays Electricity Electricity X-Rays Electromagnetic Phenomena Electric Stimulation Therapy

Publisher: Lima (Ohio) : Literary Dept. of the National College of Electro-Therapeutics

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

Series Lamp

Text Appearing After Image:

resistance and according to Ohms law, reduces the amperage. The otherstreet main is attached to the post marked P. These posts connect withthe graphite surface of the rheostat, and the main current passes aroundthrough the graphite, shown by the concentric circles, and out throughthe series lamp. Then, if the patients circuit be connected to post marked THE ELECTRO-THERAPEUTIC GUIDE 61 P P and N N, we know that the patient will be in sJuint. The metershould be in the patients circuit. So far the new controller is just thesame as the ordinarj^ shunt wired graphite rheostat, and differs from it inno respect except in size. The improvement lies in the addition of an-other wire from N to N N, which is then connected to a second incandes-cent lamp, in series with post marked P P, which is connected by a wire,shown as the dotted lines, from post P P, to the pivotal end of the slidingcontact switch. This arrangement puts the patient still further removedfrom the primar) mains, and makes the

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1907

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