TABLE 55. 



MUTUAL INDUCTANCE.* 



M 

 Values of log -T=- 



M 



Table of values of log y - for facilitating the calculation of the mutual inductance M of two coaxial circles of 



radii a, a', at distance apart b. The table is calculated for intervals of & in the value of cos' { i 



I \a a' )* + o* > 



from 60 to 90. 



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



SMITHSONIAN TABLES. 



42 



