Hello everyone! I am a high school physics teacher, and I am witnessing something with a piece of classroom equipment I can't quite explain: I have a bar magnet with three poles. There's a North pole on the top AND bottom, and a south pole in the middle. This would make sense if two magnets had been fused together, but that is not the case. The bar magnet was stored in the same place as all the other bar magnets, which are still functioning as simple N/S polar magnets, but this one somehow has a south pole in the center. The only difference is that the other magnets have partner magnets in their storage units, and this one did not, though I don't see how that could cause this. Would anyone care to offer any potential explanations?