but the molten iron keeps rotating and moving all the time, it is al about the friction!!
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Originally posted by d0se
doesnt answer the question but i found this interesting tidbit...
While the core of the earth is made of iron, it cannot be magnetic because it is so hot. What Gilbert didn't know is that when iron is heated up hot enough it loses all of its magnetism, the temperature of a material where it loses its ferromagnetism is known as its curie point. For iron the curie point is 770 °C. The iron inside the earth is much hotter than 770 °C and so cannot be an iron magnet.
hmm so what IS magnetised? =[
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