. The science and practice of dental surgery. operations. To attach the milliampere-meterconnect the + of the battery tothe rheostat, thence to the and to the patient (seeFig. 585). Current-Beverser.—Tlie battery,to be complete, should have acurrent-rev^erser, so that the polesmay be changed at will. Tliiscontrivance is found on mostbatteries on the market. Current from Dynamos.—A con-tinuous current from the main(that is from dynamos) forordinary lighting purposes may be used withperfect safety and comfort, provided theresistance of the switchboard is great enoughto reduce the curre
. The science and practice of dental surgery. operations. To attach the milliampere-meterconnect the + of the battery tothe rheostat, thence to the and to the patient (seeFig. 585). Current-Beverser.—Tlie battery,to be complete, should have acurrent-rev^erser, so that the polesmay be changed at will. Tliiscontrivance is found on mostbatteries on the market. Current from Dynamos.—A con-tinuous current from the main(that is from dynamos) forordinary lighting purposes may be used withperfect safety and comfort, provided theresistance of the switchboard is great enoughto reduce the current strength to about one volt,and can be switched on to register from a frac-tion of a milliampere with the resistance of thepatients body in circuit. Switchboards for ejector should not be used. With these fewprecautions, which are, some of them, doubtfulsources of danger, and with the current passingthrough a properly constructed switchboard,the street current may be used with perfectsafety. If the current is an alternating current, it.
Size: 1974px × 1265px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
