CH. xx.] ELECTRIC THEORY OF MATTER 191 



not displaced so as to reach the boundary of the 

 enclosing sphere will continue to rotate round their 

 common centre of gravity in the same relative position 

 as before; while this will revolve, on its own account, 

 round the centre of the enclosing sphere. Such a 

 displaced group being virtually a solitary though 

 compound corpuscle will now be endowed with great 

 radiating power. 



On the fairly verified hypothesis that the mass 

 of a corpuscle is wholly electrical, it is of interest 

 to interpret the constant c further ; it has dimensions 

 of a frequency ; for 



Ne 2 

 c 2 = ^, while m = 



So 



2V 



v I! 

 or c = 



Taking b as of atomic and a as of electronic 

 dimensions, this becomes numerically 



y I AlO 



c= *.8 V( N x !0~ 5 ) = lO'VW P er second, 



where, since Ne measures the positive charge, N is 

 practically the total number of corpuscles contained 

 in the atom : not the number contained in any one 

 ring of it. 



A compound satellite will rotate round the centre 

 of force with the same angular velocity as if it were 

 simple, for its mass and charge are increased in the 

 same proportion ; there is no concentration of the 

 charges into a single point, such as would be required 

 to increase the mass beyond the simple multiple. 



