A manual of practical medical electricity : the Röntgen rays and Finsen light . Morton claims that they are less painful than shocksotherwise obtained, and that they will produce muscularcontractions when other electrical methods fail. Theeffect of introducing the Leyden jars in the ordinary wayinto the circuit of the prime conductors is to diminish thenumber of sparks, and to increase their thickness andbrightness and physiological effect. They do not raisethe potential. Static or Frictional Electricity 13 The influence machines are very much more powerfulthan the older frictional
A manual of practical medical electricity : the Röntgen rays and Finsen light . Morton claims that they are less painful than shocksotherwise obtained, and that they will produce muscularcontractions when other electrical methods fail. Theeffect of introducing the Leyden jars in the ordinary wayinto the circuit of the prime conductors is to diminish thenumber of sparks, and to increase their thickness andbrightness and physiological effect. They do not raisethe potential. Static or Frictional Electricity 13 The influence machines are very much more powerfulthan the older frictional ones, and are more independentof the weather. For medical purposes the Wimshurst isprobably the most suitable. The plates should be as largeas is convenient (17 to 30 inches) ; those at the Salpetriereare about 27 inches ; the large plates enable us to dispensewith Leyden jars, and the severe shocks they may to twelve plates, or even more, may be used. For those who use static electricity much, a motor ofsome sort to turn the machine is a great convenience ; if. Fig. 6.—Wimshurst Machine. connected to the electric light mains, an electro-motor isby far the best; it should be of about ^ Crypto Company, of Clerkenwell Road, supply suchmotors. It is well to have the machine enclosed in a glass case,and to keep some fused chloride of calcium in a cupwithin it. To make use of this form of electricity therapeuticallywe require, in addition to an electrical machine, an in-sulating stool or couch (one with long glass or ebonite 14 A Manual of Practical Medical Electricity feet), chains, wires, various electrodes, and an electro-scope. The movable apparatus should, if possible, be carefullywarmed before a fire, and any moisture wiped off. Par-ticular attention should be paid to the glass insulators ;the air in the room should also be kept as dry as possibleby a fire, for, in spite of these precautions, it is sometimesdifficult in foggy weather to get the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectro, bookyear1902
