# Re: magnets in HDs

```Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

I use hard drive NIB magnets on my refrigerator. Imagine a coin made of NIB
S). When it breaks, the poles on each side of the plane remain in their
original NS configuration,
just smaller in size now.

Now, imagine two coins representing the broken magnet halves. If each coin
the same direction, the outer perimeters will repel. If one coin is flipped
over, then the outer
perimeters will attract. It's the shape of the magnet (nothing magical).

Obviously, when you try to put a broken plane magnet back together, the
poles must be in the same
direction on each side of the plane to get the curvature of the break to
fit together. When you do
this, they of course repel at the perimeter (at the break).

Take care,
Bart

Tesla list wrote:

> Original poster: "Yurtle Turtle by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <yurtle_t-at-yahoo-dot-com>
>
> This is one I've never understood. If I have a bar
> magnet that is N====S, then I break it in two, it
> seems like I should have a N==S N==S, but since the
> two repel, do I now have N==S S==N? Why did one flip
> polarity and the other one not?
>
> I realize we're drifting dangerously OT.
>
>
> --- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Ben McMillen by way of Terry Fritz
> > <twftesla-at-qwest-dot-net>" <spoonman534-at-yahoo-dot-com>
> >
> >   When you break a magnet, you essentially create
> > two new
> > poles opposite to that of the original poles on each
> > half..
> >
> >
> > Coiling In Pittsburgh
> > Ben McMillen
>
> =====