MAGNETS 



2 39 



MAGNETIC ATTRACTION 

 AND REPULSION 



end of the magnet attracts the needle and the other end 



repels it. The pole of the magnet which repels the north 



pole of the needle attracts the south 



pole, and the pole of the magnet 



which attracts the north pole of 



the needle repels the south pole. 



From this we conclude that the 



north-seeking ends of magnets repel 



each other and a north-seeking end 



and a south-seeking end attract 



each other, that is, magnetic poles 



of like kind repel each other and 



poles of unlike kind attract each 



other. 



164. Nature of Magnets. No magnet can be made 



with only one pole. If a magnet is broken, each piece 



will have two poles of opposite kind. The poles that 



appear near the 

 point of break- 

 ing are of oppo- 

 site kind, one an 

 N pole, the other 

 an S pole. This 



subdivision may be continued indefinitely, but two op- 

 posite poles will appear at each break. 



If several bar magnets are laid so that opposite poles 



touch, the whole line of 



magnets will act as one ^pjjjt ^^^~^^~^^'^^ 



^Z?//?/ ^^f^~ 



magnet and only two poles 



will be manifested, one at 



each end. Iron filings will 



adhere in quantity only around these two poles. The 



results obtained by breaking a magnet, and by placing 



WHEN A MAGNET is BROKEN UNLIKE 

 APPEAR AT THE- BROKEN ENDS 



POLES 



A SERIES OF MAGNETS ACT AS ONE 

 MAGNET 



