Re: electromagnets in the practice

Camilo wrote:
> On 4 sep, 11:23, "Szczepan Bialek" <sz.bia...@[EMAIL PROTECTED]
> wrote:
>>  "Camilo" <camilo...@[EMAIL PROTECTED]
>
wrotenews:43e07b13-59fc-46d7-9a4d-6dfed7ea1c7c@[EMAIL PROTECTED]
>Hi
everybody! As I understand when you face two magnets by the same
>>
>> pole, no matter if one of the magnets is very weak, they always get
>> rejected  between them.
>>
>> Are you sure?
>> There should be an analogy with electrostatics where a strong charged
body
>> attracts a week charged body (the same sign).
>> Try the weak magnet made of the hard steel.
>> S*
>
> I made another experiment to test my original premise; I took a
> neodimium magnet (strong magnet)  and a small ceramic magnet, used on
> magnetic chess sets (weak magnet), and whatever be the pole of the
> small magnet  it´s always attracted to the neodimium magnet. I
> replaced the neodimium magnet by a ceramic magnet (weaker than
> neodimum magnet but still  stronger than the small magnet) and here we
> have rejection by these two magnets.
> The only explanation that I suppose for this is that attaction and
> rejection´s law already applies to magnets but with the condition that
> there aren´t too much difference on their power. Am I right or what
> happens with this case!?

What shape are these magnets and how are you placing them exactly? 

If you think of one end of a magnet as having flux flow out of it and
the other end having the flux flow into it you might be able to see why
two like poles will always repel each other. They both have flux flowing
in contrary directions. Opposite poles have flux flowing in a
complementary manner. Out of one into the other so they attract. The
strength of the magnet means more flux flows but it doesn't change the
direction or path of the flux relative to the source.