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Chapter 171 - 168. Witchcraft
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... I have done here is to allow the rhombus shaped needle to freely rotate on its stand, which is made from another needle. And since the rhombus shaped needle is magnetised now, it starts to rotate because of the planet's magnetic field, until it aligns itself in a north-south direction."
He continued, "Like I had told you all earlier, our planet has two poles - north and south, because it is a magnet. Similarly, every individual magnet also has two poles - again, north and south. And the ...
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