A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 90.—Dr. Spamers Induction Coil, generates a current of more than 13,000 alternations persecond. This current is passed through an inductioncoil of high insulation (oil), in the circuit of the secondarywire of which is a battery of Leyden jars, which, by theoscillating character of their discharge, produce the enor-mous frequency of alternations. Similar effects on a humble scale may be produced andstudied by means of the following apparatus (ElihuThompson). To the secondary terminals of a large Ruhmkorffscoil
A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 90.—Dr. Spamers Induction Coil, generates a current of more than 13,000 alternations persecond. This current is passed through an inductioncoil of high insulation (oil), in the circuit of the secondarywire of which is a battery of Leyden jars, which, by theoscillating character of their discharge, produce the enor-mous frequency of alternations. Similar effects on a humble scale may be produced andstudied by means of the following apparatus (ElihuThompson). To the secondary terminals of a large Ruhmkorffscoil (my own gives a ten-inch spark) are attached thick, High Potential Electricity 145 well-insulated wires, the one of which passes to the knobof a medium-size Leyden jar, and the other to its outercoating. The first wire is now carried on to terminate inthe knob of a metal discharger ; the second onejs__coiled. o Cu to form a spiral of about ten turns, which is placed inside^a glass tube, such as a lamp-chimney, around which a well-insulated fine wire is coiled. The thick wire, after travers-ing the glass tube, is attached to the other limb of thedischarger (Fig. 93). 10 146 A Manual of Practical Medical Electricity The lamp-chimney and enclosed wire spiral are nowimmersed in a glass vessel half filled with petroleum ; theextremities of the fine wire coiled upon the chimney arebrought up to a convenient height in glass tubes ; the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectro, bookyear1902
