Table 55. 



MUTUAL INDUCTANCE.* 



Values of log 



M 



Table of values of log 

 radii a, a', at dis 

 from 60' to 90''. 



M 



.= for facilitating the calculation of the mutual inductance M of two coaxial circles of 

 4 TT V rtrt' , {a— a' )- + (5= ) i 



radii a, a', at distance apart b. The table is calculated for intervals of 6' in the value of cos-> \ ( m; i ^2 ] 



* Quoted from Gray's "Absolute Measurements in Electricity and Magnetism," vol. ii., p. 852. 



SMlTHSo^IAN Tables. 



42 



