Mutual Induction of Eccentric Coils, 447 



iig. 1. It is seen that the induction changes sign when 



p is less than 1*7 in all the cases taken. This practically 

 corresponds to the range o£ formula (9). 





















Fig. 



1. 

























\ 









































\ 





\ 







































\ 



\ 

















! 





















\ 



^ 



























i 



x=- 















e\ 





I 

























n 



X = 



:-i 





































irr 



X = 



3-2; 





M 









JR 



























rv 



X = 



3-5 





4-TT 











































1 





____ 



TV 







\ 



X 



^ 



V 























































































^X 



^J 























































































































1 











































1 





































i 1 



i 













1-0 



1-5 



2'0 



Table II. 



Mutual induction between equal parallel circles. 



Radii of circles = unit of length. 



^ = distance of planes; |0 = distance of axes. 



X 



=0. 





X- 



=0-1. 



x= 



0-25. 



X- 



=0-5. 



P- 



M/47T. 



ft. 



P- 



M/47T. 



P- 



M/47T. 



P- 



M/47T. 







infinity 



10 







2-39 







150 







0-88 



0-2 



2-37 



0-9 



005 



2-34 



0-121 



1-45 



0-24 



83 



0-4 



1-65 



0-8 



0-075 



2-27 



0-188 



1-38 



0-37 



0-76 



0-6 



1-20 



07 



0402 



2-19 



0-256 



1-30 



0-51 



0-67 



0-8 



0-86 



06 



0433 



2-10 



0-334 



1-20 



0-67 



0-57 



10 



0-58 



0-5 



0473 



1-98 



0-433 



1-07 



0-87 



0-43 



1-2 



0-33 



0-4 



0229 



1-82 



0-573 



0-90 



1-15 



0-26 



1-4 



012 



0-3 



0-318 



1-60 



0-796 



0-65 



1-59 



0-03 



1-6 



-0-17 



0-25 











1-94 



-0-10 



T8 





02 



0-49 



1-24 



1-225 



6-26 







2-0 



-0-43 



0425 



04 



005 



100 

 2-00 



6-53 

 -0-36 



1-98 



-0-24 



::: 







