Subject: Behaviour of a magnet after it has been broken

This refers to a magnetic bar with one pole on each edge, like this one:
N==========S
Now, when we break it, each half would theoretically regenerate a pole at 
the newly created edge, therefore making it bipolar like the original one.

N====S    N====S

The problem is as follows: Following this theory means that the north-pole 
half regenerates a south-pole on it's broken edge, and the south-pole half 
will create a north pole on it's broken edge as well. This means that the 
broken edges of the two halves have opposite poles, and therefore when we 
draw them close to each other, they must attract and pull together to form 
the original magnet. Yet, the broken edges REPELL each other. It would say 
that one of the broken halves has reversed polarity. Is that correct? If 
yes, which one? Is this the shortest of the two?

Re: Behaviour of a magnet after it has been broken