# permanent magnet energy field [duplicate]

Please explain to me this:

What is the physical mechanism of the field and atraction force; in which way a force (electro, magnetic or gravity) is transmited between two objects? I will try to explain that question with a few sub-questions (basicly the same ones): On the extreme basic level, the question is: how two particles (proton and electron) atract each other? I know they have opposite charges, but how that charges atract each other? How they "comunicate" that information? How they "produce" atraction force? On the other hand - is it the same mechanism with gravity force? How two bodies "comunicate" their masses? How they start to move toward each other despite their inertial masses? Where that energy come from? What is that force? I know it's a "bit" messy question, but what is the essence of that atraction?

Thanks a lot. Boris

• Ever try separating an iron ball from a strong magnet? Uses a lot of energy, doesn't it... – DJohnM Jan 24 '15 at 21:28
• Why should we not compare this with gravity? :) How is it different? Something sets up a field of some sort. And something else is attracted. For me, intuitively, all fields essentially work the same way - they just work on different "objects". (Except of course that gravity only attracts, while a magnetic field, an electric field etc. can also cause repulsion) – Steeven Jan 24 '15 at 22:57
• Think about this: Remove the table, and everything else than the magnet and the ball. The ball is moving towards the magnet, but the magnet is also moving towards the ball. So which object gives the "energy"? The energy is not from either body, it is from the combination. From the system. We call it potential energy. – Steeven Jan 24 '15 at 23:25
• Thank you for the answer. I think we should not compare gravity and magnetic field in means that magnetic atraction happens only between metal objects - it means that nature of that field is very different than of gravity field. Second: I don't think that both the magnet and the ball gives energy. Why? If we put 2 balls together - nothing will happened. It means that the magnet is one who gives energy. Anyway, my questions are still the same: 1. is this energy endless? 2. what is the physical mechanism of that atraction force? – zagreb boris Jan 26 '15 at 22:14
• Due to the massive edit, the linked duplicate no longer fits for this post. However, it now seems to be a duplicate of this question. – Kyle Kanos Jan 27 '15 at 0:43