. Transactions and proceedings of the Royal Society of South Australia (Incorporated). 50 100 150 200 Z50 Height of in cms. 300. Fiq J 50 I0O 150 ZOO 250 300 350 400 Voltage 10 nature of the curves shows that they are produced by a mix-ture of ions of varying mobility, the mean mobilities, how-ever, being the same for positive and negative ions. No point of inflexion could be found in the mobilitycurves, even when the field reached a value of 400 volts/cm. The shot used in these experiments and in the precedingweighed 0392 gm. per shot. When glass beads (diameter036 in.) were substituted
. Transactions and proceedings of the Royal Society of South Australia (Incorporated). 50 100 150 200 Z50 Height of in cms. 300. Fiq J 50 I0O 150 ZOO 250 300 350 400 Voltage 10 nature of the curves shows that they are produced by a mix-ture of ions of varying mobility, the mean mobilities, how-ever, being the same for positive and negative ions. No point of inflexion could be found in the mobilitycurves, even when the field reached a value of 400 volts/cm. The shot used in these experiments and in the precedingweighed 0392 gm. per shot. When glass beads (diameter036 in.) were substituted for the shot and allowed to fallthrough a glass tube on a glass target the saturation curvesshown in fig. 8 were obtained. The character of these curvesshows that the variety of ions is still greater than in thecase of those produced by lead shot. Calculating for thepoints P and Q as the elbows of the curves the mobilities arefound to be lO x 10~3 for both positive and negative ions. The sign of the total charge on the air drawn over thetarget was determined by drawing it through the Faradaytube. When lead shot fell upon a targ
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscience, bookyear1912
