Magnetic Field
Earth acts as though it were a huge dipole magnet with the positive and negative poles near the North and South Poles. This does not mean that Earth is literally a dipole magnet—...
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Magnetic Fields and Forces
Magnetic fields are produced by magnetism, the flow of electric charge, or fluctuating electric fields. In the first case, the magnetic field can be described as a region ar...
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Magnetic Properties of Matter
Magnetism is a property of matter and it occurs in different forms and degrees in various conductors and insulators. For example, at low temperatures, metallic systems ex...
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Magnetic Field
William Gilbert, who experimented with navigational compasses, suggested that the Earth itself was a great spherical magnet. This implied that Earth had a magnetic field which caused co...
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Electric and Magnetic Fields
Referred to as EMF, the fields of energy surrounding electric power wires and other current-carrying devices.
Electric power lines, household wiring, and appliances all ca...
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Magnetic Field
Magnetic Fields and Forces
Magnetic Field
Electric and Magnetic Fields