838 • Mr. R, T. Lattey on the Dielectric 



Let /, = inductance in series with C 

 and I = „ ,, „ x. 



Equation (la) must then be modified, and becomes 



"=(* + Z^M&-Z&mJ- • ( 4 > 



r here 



pot 



and 



r 2 {l-p 2 lx) 2 +p 2 l 2 



ft = 



c 



< gr 8(l-, i j2/. r ) — ? 



l-p^C ' r 2 (l-p 2 lxy 2 +pH* 



+ 



(4 a) 



If tuning is obtained by varying C, then a is invariant, 

 and the condition for maximum current is 



KC„'(I„/I-1) 



and 



K 2 -V/PTl" C o/i ] K I 

 ft — iV l; o I 



^0 TZ2 T 2/T2 i 1 > J 



(o) 



K 2 ~i 2 /i 2 +r 



where C ' = C /(l-p 2 ZiCo). 



The values of I and l x can be found by rising an electrolyte 

 with a high value of r {e.g. pure water). Equations (4a) 

 and (5) then become 



Co 



c 



<+ 



i-//iC i-yho \-fix 



or 



X = DV a = 



C -0 



where D = the dielectric constant of water and Ca = the value 

 of x when air is used as dielectric. 



The term p 4 Z 1 2 CC is negligible, and therefore (C — C)/C* 

 will be a linear function of C. 



For conducting dielectrics, 



x pHW+il+pHA) 2 



4/2 , (l+7-? 2 /A ) 2 

 = pH 2 * + ± , 



and pi 

 where A = ft 



(6) 



C 



1-jt^C 



