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Magnetism (Properties (Attraction to other Magnets (Different Poles),…
Magnetism
Properties
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The magnetic forces are strongest near the ends, or magnetic poles of the magnets.
If a bar magnet is suspended it turns freely, the north end will point north.
Major Concepts
Magnetic Fields
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is a vector field
If a charged particle moves in a magnetic field, it experiences a deflecting force.
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Electrons as magnets
A pair of electrons spinning in opposite directions, however, work against one another. Their magnetic fields cancel. This is why most substances are not magnets.
The atoms of a magnet contain electrons that are in constant motion about atomic nuclei. This moving charge constitutes a tiny current and produces a magnetic field.
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Examples
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Iron, Nickel and Cobalt have electrons that do not cancel out their M. Fields
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The picture tube, or cathode-ray tube, in a television set uses electrons deflected by a magnetic field to form the picture on the screen.
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