348 Results of Experiments on capacities of wires 



if charge cyl. is supposed to be to that of globe whose diam. = length 



cvl: : : | : N. L. 2 ! ength , their charge = 1-008 . 

 diam. 



i -006 



This ratio approaches about 5 times nearer to the first proportion than 

 the 2 nd *. 



The area of the oblong is the same as that of the square, and their charges 

 are very nearly the same. 



The charge of a square is to that of a circle whose diam. = side square as 

 1-153 to if. 



683] In exper. P. n, 1772 [Art. 477], the large wire should contain about 

 ,,'.. less el. than if its diam. was double the small ones. Allowing for this, the 

 charges of the large wire at 36, 24 & 18 inc. dist. should be between the two 

 following proportions: 



i -942" -915 -891, 



i -901 -868 -844, 



but I believe ought to approach about 5 times nearer to the former. The 

 observed proportions arej 



i -903 -860 -850. 



* [Note 12.] 



t [This ratio is given in Art. 283 as 1-53 by a mistake of the Editor in copying, 

 see Note 22.] 

 t [Note 13.] 



