. Practical radiography : a handbook for physicians, surgeons, and other users of X-rays . g to the suddenincrease of the cross section of the liquid) an instan-taneous rush of current through the coil and then a suddenstoppage ; possibly by substituting a more reliable materialfor the glass the continuity of working may be eventuallysecured. There is also a very considerable heating of the electro-lyte during the working of the break, which necessitatesthe adoption of certain means whereby the temperature ofthe liquid may be kept within workable limits, as when forpurposes of prolonged screen
. Practical radiography : a handbook for physicians, surgeons, and other users of X-rays . g to the suddenincrease of the cross section of the liquid) an instan-taneous rush of current through the coil and then a suddenstoppage ; possibly by substituting a more reliable materialfor the glass the continuity of working may be eventuallysecured. There is also a very considerable heating of the electro-lyte during the working of the break, which necessitatesthe adoption of certain means whereby the temperature ofthe liquid may be kept within workable limits, as when forpurposes of prolonged screen examinations, for instance— 8o Practical Radiography the break must be kept in the circuit for any length oftime. Amongst the methods employed to ensure thiscondition we mention : Surrounding the containing jarwith a jacket; causing water to circulate in the spacebetween the two vessels : or forming one electrode of aspiral of lead tubing through which cold water is circulat-ing : or providing a containing vessel of such capacity thatthe heating of the electrolyte and the consequent. Fig. 37. fatigue of the interrupter only occur after very longperiods of working (Fig. 38). The various attempts to substitute different metals andelectrolytes for the orginal lead and sulphuric acid havenot been productive of any appreciable advantage, andgenerally require higher voltages. The electrolytic interrupter produces considerable noisewhen working, which is apt to be disagreeable to somepatients; for this reason, and also because acid fumes aregiven off, the break may be placed in some other room. Plate VI.]
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