88 



EXPERtMENTS WITO IONIZED AIR. 



carrving phosphorus) being about 1 ceiitiiii. in (liameter. Potential differences Fas 

 lii^'h as 200 volts were applied, the external surface being put to earth. The cur- 

 rent is as usual, found from equi<listaiit observations separated by an interval of 3 

 minutes. A few test e.\j)eriments were made by repeating the earlier measurements 

 for 21 and 03 volts, but it was thought wisest not to attempt to correct the data 

 for the fluctuating ionizing activity of iihosphorus in the lapse of time, nor to 

 ass\ime curvature in the initial (/ = 0, nearly) contours of the curves. The graphs 

 for -s' and / (not shown) are in fact of this nature. 



T.VBLE 7— RESULTS FOR CONDENSER K8 (Z>=6.9 cm.) FOR DIFFERENT 

 POTENTIAL DIFFERENCES V. 0=26.8°. 



The chart, figure 14, gives the relation of the current ( rf.s/ 5^), arbitrarily in 

 scale parts, to tln^ jiotential diffei-eiice V in volts per cfiitiiii., or strength of the 



