The London, Edinburgh and Dublin philosophical magazine and journal of science . the saturation current is diminished in alarger proportion than the current for small electromotiveforces. This is shown by the following diagram, whichrepresents the i and E curves through chlorine gas for dif-ferent intensities of the Rontgen rays ; the weak radiation wasgot by interposing a thick aluminium plate. In this diagram Fijr. the ordinates for the weak radiation have been increased soas to make the ordinate for the saturation current of theweak radiation the same as that of the strong. When this is
The London, Edinburgh and Dublin philosophical magazine and journal of science . the saturation current is diminished in alarger proportion than the current for small electromotiveforces. This is shown by the following diagram, whichrepresents the i and E curves through chlorine gas for dif-ferent intensities of the Rontgen rays ; the weak radiation wasgot by interposing a thick aluminium plate. In this diagram Fijr. the ordinates for the weak radiation have been increased soas to make the ordinate for the saturation current of theweak radiation the same as that of the strong. When this isdone the rest of the weak curve is above the strong,showing that the diminution in the radiation has affected thesaturation current to a greater extent than the weaker cur-rents. The saturation current depends only on the numberof conducting particles produced by the rays ; for the smallercurrents the diminution in the number of molecules is tosome extent compensated for by the increase in the timetaken for these to recombine ; thus T is increased when theintensity of the rays is diminished, so that, as we see fromequation (6), the proportion between a small current and thesaturation current is increased when the intensity of the raysis diminished. Whatever is the magnitude of the electromotive force, adiminution in the intensity of the rays is accompanied by adiminution in the current, so that the 1 and E curves
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Keywords: ., bookcentury1800, bookdecade1840, bookidlondon, booksubjectscience
