﻿160 Prof. Burton and Mr. Wiegand : Efect of 



much more apparent than the repulsive forces. Again, fig. 13 

 gives the numbers of the first row of the table plotted against 

 the ratio of the charges. Here again we see that as the values 

 of the charges differ more and more, the attractive forces 

 will be much more apparent than the repulsive forces were. 



Fiff. 13. 



8>^ 





I ! 



! 











i 





























-U 



















1 

















-20 



5 





























































Force hetr/een two equS,Z 

 spheres plotted a&cLcnst 





I 1 



+V0- 











the r 



it to of 



C = 2' 



tf>et r c 



I r 



Targes. 



,0-£ D*%E V-M D-4E S£ 



& J£ 8£ 



R&tio of chcirg&S, 



That these forces are extremely important in the cases 

 under consideration is borne out by numerical calculation for 

 two typical cases : — 



1. Suppose two equal drops *1 cm. in radius at distance 

 centre to centre of *23 cm. (V = 'l, c = 2'3). From Kelvin's 

 tables in expression for force (8) 



and 



a = -05444, £ = -12186, 



F= {l2£-37« j~ if D : E = 6 : 1. 



