﻿744 



Mr. R. G. Lunnon on the Unilateral 



The curves so obtained are given in fig* 3 ; they are, except 

 at first, approximately exponential. 



Fiff. 3. 



Variation of Potential 



with "Time. . 



( Current Constant.) 



M \ NOTES. 



These results can be explained on the assumption that the 

 resistance is proportional to the amount of substance on the 

 electrode, and that the rate of removal of the latter is pro- 

 portional to the applied p.d. The relation between V and t 

 can then be obtained as follows : — 



With the symbols of the diagram (fig. 4), we have 



Fi«r. 4. 



Cr 2 =Ci(r 2 +r 3 )~E, 



C^OCR + r^Y). 



* E 



c= 



(R + ri + rgXrg + f's)-^ 2 ' 



