Röntgen rays and electro-therapeutics - with chapters on radium and phototherapy (1910) (14571660097)

Identifier: rntgenrayselectr00kass (find matches)

Title: Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy

Year: 1910 (1910s)

Authors: Kassabian, Mihran Krikor, 1870-1910

Subjects: Electrotherapeutics X-rays Phototherapy Radiology Radiotherapy

Publisher: Philadelphia & London : J.B. Lippincott Company

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

(d) and that he had been able to generate in a branch circuit, includ-ing his own body, a current of more than three amperes without any other effect than asensation of heat in the hands. 122 ELEOTEO-THERAPEUTICS. short coil to increase the frequency of the current, by diminishing theinductance. A static generator may be substituted for the induction coil.Currents of exceedingly high frequency are produced by the D Arsonvalapparatus. When currents of much higher potential are desired they canbe obtained from a fine wire coil of relatively many turns, inclosed in aglass tube filled with petroleum, and inserted in the thick wire coil. That the frequency must be exceedingly high is proved by an experi-ment made by Dr. Sheldon. In place of the induction coil for producingthe spark at the gap, he employed a Holtz machine. Teslas High-Feequency Apparatus. This is described by its author as follows : The writers experiencestend to show that the higher the frequency the greater the amount of

Text Appearing After Image:

Fig. CO.—The Tesla transformer. electrical energy which may be passed through the body without seriousdiscomfort ■ * * * * By taking the globe of a lamp in the hand,and by bringing the metallic terminals near to or in contact with a con-ductor connected to the coil (that is to say, connected to one terminal ofthe secondary of an induction coil whose primary is energized by analternating current of very high frequency), the carbon is brought to

rontgen rays and electro therapeutics 1910 book illustrations medicine medical illustrations medical history x ray rontgen electrotherapeutics images from internet archive

1910

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