Thirty chapters on static electricity selected from the original manual of Static electricity in X-ray and therapeutic uses (1903) (14597465119)

Identifier: thirtychapterson00mone (find matches)

Title: Thirty chapters on static electricity selected from the original manual of Static electricity in X-ray and therapeutic uses

Year: 1903 (1900s)

Authors: Monell, S. H. (Samuel Howard), d. 1918

Subjects: Electrostatics X-rays Electric Stimulation Therapy X-Rays

Publisher: New York : E.R. Pelton, publisher

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

he edge of the platform; (2)by turning the machine more slowly; (3) by removing directmetallic conduction and placing the brass rod directly upon thewooden platform and (4) farther away from the patients feet. A very mild breeze or spray application may be made bysimply holding the metallic part of the electrode in the handsinstead of giving it metallic conduction to the earth. A mild spark can be given in the same way, but causes a con-traction in the operators wrist. It should be noted that in any continuous electrification orbreeze application, the direct metallic connection with either HOW TO REGULATE CURRENT STRENGTH. 95 the hands or feet of the patient produces no sensation what-ever. The moment the current is interrupted by any form ofspark discharge the patient must be protected from annoyanceby the operator. A strong spark given with positive electrifica-tion and the rod held in the hand will cause an annoying con-traction at the wrist; but with both hands in contact with the

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The above diagram shows the foot resting upon the edge of the platform toleak off the current when it is desired to apply a very mild spark or breeze. It isa temporary expedient which at sometime is employed in the treatment of themajority of cases. rod and negative electrification, an ordinary positive spark maybe given with comfort. If shoes are thick-soled, and are filledwith nails in either the sole or heel, sparks may sometimes an-noy a patient whose feet rest upon the metal tray. With ordi-nary shoes this does not occur. The dosage of Leyden-jar currents is regulated by the size ofthe jar (small, medium, or large), by the distance between thesliding poles, and by the rapidity of the revolving plates. The 96 STATIC ELECTRICITY. nearest equivalent to a high-tension induction-coil current is ob-tained from the smallest jars, with the plates revolved very fastto simulate the rapid vibrator, and very slowly to simulate theslowly interrupted faradic current. Extremely rapid rates areb

1903 книги электростатика книжные иллюстрации лекарство медицинские иллюстрации история болезни история техники электроэнергия электричество Рентгеновский лечебная терапия электрификация изображения из интернет-архива

1903

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