Experiments show that the Earth is a big magnet argument

 We are very familiar with the name Marco Polo Asians making the magnet compass to the European region . Professor, University of Paris left Linus shellfish tired of magnets made ​​from oriental studies speculate seriously . Zty Chinese children Resources Network
  He did an experiment with a magnet to be placed on the water board , the board found containing magnets has always pointing north to south . He again used the same methods and rubbed iron magnet materials are placed in the same way that wood, when the wood on the water , we found that wood is also pointing north-south direction . Why is rubbed with a magnet iron objects have magnetic ?
    According to Dr. Tony Gilbert also tired left Linus did the same experiment to verify that he would split the day magnet , placed on the board, then floating in the water be found even if the magnet is cut , the same will still point to the north and south . Found : The magnet and the other a level close to the orientation of the magnet , but also the occurrence of the phenomenon of mutually exclusive , and if the two magnets are oriented level ( ie the level close to the north-south ) , will attract each other , he considered this is the magnetic force. Zty Chinese children Resources Network
 Gilbert found a magnet and another magnet Antarctic Arctic can be attracted to each other , thus from his research associate , the Earth itself is not that a round magnet it? Earth's magnetic poles are .
  So Gilbert with magnetite ore processed a globe model were identified globe north and south poles , and with a compass needle to experiment on a small globe , compass needles actually point to the globe 's north and south poles , which, with the compass needle pointing north-south direction on the ground situation is exactly the same. It follows that a planet is a big magnet scientific argument, also proved his inference is correct.
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