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Magnefic Magnetic Squares, 1 Tape Sheet of 70 Magnetic Squares (Each 20x20x2mm), Magnet on one Side, Self Adhesive on The Other Side. Perfect for Fridge Organisation, Art Project, Vision Board
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electromagnetism - Why does the magnetic field form a full loop going from the north pole to the south pole and then back to the north pole? - Physics Stack Exchange
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