Megnetisam

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Lodestone is a naturally occurring magnet made of iron oxide (Fe₃O₄) found in Magnesia, Asia Minor. It was the first known magnet with two key properties: (1) it attracts iron pieces, and (2) it align

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Induced magnetism is the temporary magnetism acquired by a magnetic material when it is kept near or in contact with a magnet. The magnetic material behaves like a magnet only as long as it remains ne

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When an ordinary iron piece is brought near a magnet, the iron piece first becomes magnetized by induction (the near end acquires opposite polarity), and then it gets attracted. The attraction happens

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A magnetic field is the space around a magnet where a compass needle is influenced and rests in a direction other than the geographic north-south direction. It is a vector quantity. The direction of m

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Magnetic field lines are continuous curves in a magnetic field such that the tangent at any point gives the direction of magnetic field at that point. Key properties: (1) They are closed and continuou

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Four evidences of Earth's magnetic field: (1) A freely suspended magnetic needle always rests in geographic north-south direction, (2) An iron rod buried along north-south direction becomes a magnet,

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Neutral points are locations where the magnetic field of a magnet equals Earth's horizontal magnetic field in magnitude but opposite in direction, making the net magnetic field zero. When a magnet's n

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Earth's magnetic poles don't coincide with geographic poles. Earth's magnetic south pole is in Canada (70-75° north latitude, 96° west longitude), about 2240 km from the geographic north pole. Earth's