Practical electro-therapeutics and X-ray therapy - with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray (1912) (14734070906)

Identifier: practicalelectro00mart (find matches)

Title: Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray

Year: 1912 (1910s)

Authors: Martin, James Madison, 1866-1947

Subjects: Electrotherapeutics X-rays Diagnosis, Radioscopic Eye Electric Stimulation Therapy X-Ray Therapy Ophthalmologic Surgical Procedures

Publisher: St. Louis : C.V. Mosby

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

utic agent. Togo into a thorough discussion of electrostatics would require alarger volume than this. Static induction and magnetomotive force are very closely re-lated, if, in fact, they are not one and the same thing. By rub-bing a glass or ebonite rod with a piece of silk, flannel, or catsfur, and holding it near an electroscope, as shown in Fig. 15, theleaves will close, or converge, owing to the difference of the chargeon the electroscope and the rod. The same test is made by bring-ing the same rod near a suspended pith ball, as shown in Fig. 16.The ball will swing toward the rod as soon as it comes within itsfield of influence. This influence, when acting across an air gap,is called electrostatic induction. Friction between two substances produces heat and a conse- 44 ELECTROSTATICS 45 quent disturbance of the electrons. While in this heated stateone of the substances takes on a preponderance of electrons and be-comes negative, while the other gives up a part of its normal elec-

Text Appearing After Image:

Fig. 15.—Electroscope.

practical electro therapeutics and x ray therapy 1912 book illustrations medicine medical illustrations medical history history of technology electric power electricity x ray surgery medical therapy electrotherapeutics dentistry images from internet archive

1912

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