The London, Edinburgh and Dublin philosophical magazine and journal of science . ection. But this simple explanation,however plausible at first sight, is yet an imperfect accountof the function of the condenser. In this paper, I propose to * Communicated by the Author. 2 H2 448 Mr, T. Mizuno on the Function of communicate the results of my investigations on the con-denser, which seem to me to throw some new light on itsaction. The object of my investigation was to examine theeffect which variations of the capacity of the condenserinserted in the primary circuit produced upon the maximumspark-l
The London, Edinburgh and Dublin philosophical magazine and journal of science . ection. But this simple explanation,however plausible at first sight, is yet an imperfect accountof the function of the condenser. In this paper, I propose to * Communicated by the Author. 2 H2 448 Mr, T. Mizuno on the Function of communicate the results of my investigations on the con-denser, which seem to me to throw some new light on itsaction. The object of my investigation was to examine theeffect which variations of the capacity of the condenserinserted in the primary circuit produced upon the maximumspark-lengths of the secondary, when the primary currentwas kept constant. Experiments. An induction-coil 11 centim. in diameter, 21 centim. inlength, and having a mercury interruptor was used forexperiment. The condenser of the coil was removed, and anadjustable condenser was put in its place. The primarycircuit was fed by nine accumulators, the strength of thecurrent being regulated by means of a rheostat. The arrangement of the experiment is shown in the annexedfigure :—? P S. P and S denote the primary and the secondary circuitsrespectively. Q is the mercury interruptor, and the inter-ruption was effected by hand. C is the condenser, whosecapacity could be varied between 0*05 and 1*00 microfarad. The maximum spark-lengths between the terminals of thesecondary circuit were determined by a point-plate sparkmicrometer R, each measurement being made five times, andthe primary current was measured by a Lord Kelvins gradedcurrent-meter G. Since the spark-length depends, to a large extent, upon thesurface conditions, especially on that of the point, the latterwas each time thoroughly polished with sand-paper. Evenwith this precaution the spark-lengths occasionally showedsome irregularities. The results of observation are given inthe following table :— the Condenser in an Induction-Coil. 449 -5fe 5 w) g kO o o o © o o o o o o © kO © © CO © CI CO *# I—1 o t- cc kO rr CO CO C5 S3
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
