32 



Voltaic Induction. 



If, however, we make these particles move downwards, in front of 

 the magnet, one surface of each, the under one, will enter upon the 

 line of induction at the very instant when the opposite one is depart- 



ing. 4 



n 



S 



1ST 



n 



ing from it* At the under sides, therefore, it is supposed that the 

 process commences and continues during this kind of motion* From 

 the under side of a, the force N#' will repel a north polar force to- 

 wards x 1 and from that of a', a similar one will revolve towards cc", 

 each being accompanied by equal forces of an opposite character, 

 moving in a contrary direction in consequence of its attraction to- 

 wards N. The arches s n and s'n' represent the respective direct- 

 ions of these poles, which are supposed to revolve in curves around 

 the particles, in consequence of their mutual attraction for the mat- 

 ter. When the motion is discontinued, so will also the induction 

 cease, and the polar forces, after revolving for a time in proportion to 

 the impulse already received and the corpuscular attraction, pass 

 into the particles and neutralize each other. But when the mo- 

 tion is continued in the same direction, fresh magnetic forces act in 

 quick succession upon the same surface, so as not only to augment 

 the force and amplitude of the rotation produced by preceding ones, 

 but to lead to their extension laterally, by the rapid generation of 

 similar circles. The result is the circulation of a voltaic current, 

 passing through the particles at right angles to the magnetic rotation. 



the same particles a, a', to move upwards before the magnet, at their 

 upper surfaces will commence the induction, for the reason already 

 assigned ; and this, leading to a rotation the reverse of the former, will 

 be accompanied by a current, likewise of an opposite nature. It is 



