. 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 . ddition of negative charges anda like momentarily weakening of the negative charges on B. Theincrease of the negative charges on A increases the negative charge ELECTROSTATICS 59 on the inside coat of Leyden jar Ll, while the discharge of B weak-ens the negative charges on the inside coating of Leyden jar this instant the electrons that have collected in considerablenumbers on the outside coating of Leyden jar Ll will returnt
. 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 . ddition of negative charges anda like momentarily weakening of the negative charges on B. Theincrease of the negative charges on A increases the negative charge ELECTROSTATICS 59 on the inside coat of Leyden jar Ll, while the discharge of B weak-ens the negative charges on the inside coating of Leyden jar this instant the electrons that have collected in considerablenumbers on the outside coating of Leyden jar Ll will returnthrough the conducting cord Gl, electrode HI, the patient M, elec-trode H2, conducting cord G2, and back to the outside coating ofLeyden jar L2, to be forced away again as soon as the jar L2 hasits inner coating negatively charged. The whole process takesonly the smallest possible fraction of a second, and because of itsrapid change in direction the current is a truly interrupted cur-rent, simulating closely the faradic current and used mainly forthe same class of cases. It is claimed that the oscillations in thecurrent are from 200,000 to 300,000 per Fig. 28.—Arrangement for potential alternation. Patient negative. (6) Potential Alternation.—This particular arrangement ofstatic machine, patient, and electrode was first suggested by Doc-tor S. H. Monell in 1893. It differs very little from the Mortonwave current, to be described, and has no advantage over it in thetreatment of any case. It is seldom used, but is here describedbecause sometimes spoken of in papers and text-books. Fig. 28 shows the arrangement of static machine, electrode, andpatient to produce the effect known as potential alternation. Itdiffers mainly from the Morton wave in the spark gap, which, in-stead of being between the prime conductors, is between the sta-tionary electrode and the ball on the shepherds crook on the prime 60 PRACTICAL ELECTRO-THERAPEUTICS AND X-RAY THERAPY conductor B. In this
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1912
