﻿for Measurement of Resistances and Capacities. 307 



The mean continuous current through the galvanometer is 

 consequently 



*-\\i~*°*-&*\ 



(8) 



If 8 lies between ^ ami f, we get, on carrying out the in- 

 tegrations by means of (7), a d simplifying a little by writing 

 hyperbolic in place of* exponential functions, 



FO a f, 7W . n r-*/i coslr^cr ,. ,A 1 



FC/E is thus a function of the four variables p—k, r — k y 

 zt, and 8. The particular expression (9) for the function 

 will be modified somewhat when 8<J or > |, in consequence 

 of the different expressions for C during the contact and 

 the break periods of the battery commutator. The corre- 

 sponding expressions for C are easily obtained, but since the 

 general results deduced from them are the same, it is not 

 necessary to write them down. Curve II. (fig. 4) represents 



Fiff. 4. 



■ee-o-a- 



Cuw£ I ftrdiizates .- Unreversed Current tfovagh grdtfir?' 



ApSClssae - Tcfru m/ruc/Jork of rerersa? ptriod. 

 Curve JT 0\dinates .- M^w contiruuttts Cut-rent MroufA. $afr- 



1 



a theoretical and experimental curve of C with 8 determined 

 for the same values of the variables as those given above. 

 The relation between the variables which corresponds to an 



X2 



