Magnetic field
The space round a magnet where its force acts on magnetic materials is its magnetic field. It is strongest near the magnet and fades with distance. Iron filings scattered on paper over a magnet, or small compasses placed round it, show its shape: field lines that leave the north pole, curve round and enter the south pole. The lines never cross, and they are packed closest where the field is strongest, at the poles. Between unlike poles the lines run from one magnet to the other; between like poles they turn away, leaving a spot where the field is almost zero.
Depth 1 · Foundation
You know that a magnet's field is the space where its force acts, can read its shape from iron filings and compasses, and know that field lines run from north pole to south pole, never cross and crowd together where the field is strongest.
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Foundation
You know that a magnet's field is the space where its force acts, can read its shape from iron filings and compasses, and know that field lines run from north pole to south pole, never cross and crowd together where the field is strongest.
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