A manual of practical medical electricity - the Röntgen rays and Finsen light (1902) (14803510623)

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

Text Appearing Before Image:

lates ; it has no relation to thesize of the cell. It follows, then, that we cannot increaseit-by using larger cells. A Daniell cell of ordinary size hasan E. M. F. of one volt, and though we built one as largeas a washing-tub, its E. M. F. would remain just the same.From this point of view, then, there is nothing to be gainedby having large cells. The E. M. F. can, however, be varied by changing thenature of the plates and liquid ; thus the Smee cell has an E. M. F. of about 075 to rioy Leclanche > )? I 47 Silver chloride ) )) rig5 to i8 Marie Davy ) )) 1-5 Grenet > 5i rg to 2 Daniell J 55 II Bunsen 1 55 1-9 Hellesen 5 55 1-47 Accumulators 5 55 22 Series Arrangement. To obtain a greater E. M. F. than any one cell can give,we must use a number of cells, and these must be con-nected in series, i.e., the copper or carbon plate of one cellmust be connected to the zinc plate of the next (Figs. 2yand 28). By this arrangement the total E. M. F. of the collection Electromotive Force 55

Text Appearing After Image:

u > P-.

a manual of practical medical electricity book illustrations medicine medical illustrations medical history history of technology electric power electricity x ray röntgen medical therapy electrotherapeutics images from internet archive

1902

Open Knowledge Commons and Harvard Medical School

http://commons.wikimedia.org/

public domain