Recovery of Residual Charge in Electric Condensers. 583 



cam was timed so that the point Gr on it was just opposite H 

 when the coatings of the condenser were connected to P, Q. 

 The desired result was that the deflexion o£ the electro- 

 meter remained constant while the shutter was being moved 

 in. How nearly this was attained will be seen from the tigs. 3, 

 4, 5 (PL XV.), in which the deflexions are plotted against 

 time, the data being given in Tables I., IL, III. In each figure 

 the top curve w^as obtained by allowing the Residual Charge 



Table I. 

 -J Partition exposed. 



Time 

 in Minutes. 



Deflexions of Electrometer. 



Shutter kept 

 closed. 



Shutter moved in 

 by cam. 



Shutter kept 

 open. 



j. 



153 



17-5 



18-5 



19 



19-3 



19-5 



196 



195 



19-4 



193 



19-2 



19-1 



14 



14-8 



15 



15 



15 



15 



14-9 



14'8 



134 



139 



13-6 



13-2 



126 



11-8 



111 



10-4 



9-7 



90 



8-4 



7-8 



j. 



1 



1 



li 



H 



11 



2 4 



2\ 



9i 



2f 



3 



Table II. 

 2 Partitions exposed. 



Time 

 in Minutes. 



Deflexion s of Electrometer. 



Shutter kept 

 closed. 



i6*5 



18-0 



18-5 



18-85 



18-95 



18-95 



18-82 



18-65 



18-50 



18-3 



18-1 



180 



Shutter moved in 

 by cam. 



Shutter kept 

 open. 



15-3 



15-5 



15-6 



15-6 



156 



15-65 



15-7 



14-9 

 14-3 

 12-8 

 111 



9-4 

 7-8 

 6-4 

 51 

 4-1 

 3-1 

 2-3 

 1-5 



X 



* 



1 



1± 



n 



i# 



2 ::::;; 







OL 



Ol 



2| 



3 



