564 Period and Decrement of Oscillatory Electrical Circuit. 



AOOO 



Comjiarison ivitlt tJie equation for a single circuit. 

 For a single circuit, the frequency of the oscillations is 



given by 



~2ttV Lid ' 



(8) 



When R 2 /L 2 is very large, the values o£ n given in the 

 Tables should approximate to the values given by the formula. 

 Table VIII. shows how this approximation becomes closer 

 the higher the value of R 2 /L 2 , k 2 in this case being 0*95. 



It appears therefore that the simple expression (8), which 

 is strictly applicable to a single oscillatory circuit possessing 

 resistance, cannot generally be used when the damping arises 

 from the resistance of a closed secondary coupled with the 

 circuit. As already remarked, the above results are applic- 

 able only to the case in which the capacity of the secondary 

 coil is negligible. In certain actual cases, when the secondary 



