306 HENRY A,. BOWLAND 



Method 13. 



(A} \bL"- 1 ,,T - [R tl R'-R,R"'\ I 

 [_ bC"_\ 



This determines capacities or self inductions in absolute value. As 

 described above, mutual induction can also be determined by convert- 

 ing it into self induction. 



Method 



Of course, in any of these equations, methods 13 or 14, L" is elimi- 

 nated by making L" = or the condenser, C, is omitted by making 

 C = oo. 



Method 15. 



/ 



R'R- 



R'"R 



or ^- or - 5 2 Z 6 V/ R '" R '" R ~ R ' R " (^ 

 " ' ~ '" '"-" 







C, L 



When ^ //; = oo we have 



A -fl'^y, (R" + R"') R"R l R" t _ ft, r> ^" r 7->"/ r> E>' E> T 



^r/ - ^>/// ~ Ka> u ~f>rrt I 2i && **u\ 



b 2 L c" R^RtR'R,! 



' R"R'" 



If we adjust by continuous current, we shall have R'"R I R'R tt = Q. 

 For a condenser we can made R" = provided there is no electric 

 absorption. In this case l} 2 L t C" is indeterminate and we can adjust 



to findw,. However, two simultaneous adjustments are required. 



But I have shown that the presence of electric absorption in a con- 

 denser causes the same effect as a resistance in its circuit, the resist- 

 ance, however, varying* with the period of the current. Hence R" must 



