Electromagnet
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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of copper wire wound into a coil. A current through the wire creates
Homemade electromagnet with 9V battery
Closeup of a large Henry electromagnet
Industrial electromagnet lifting scrap iron, 1914
Laboratory electromagnet; produces 2 T field with 20 A current
Electromagnetism
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In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature.
Electromagnet
…Dipole magnet – the most basic form of magnet Electromagnetism Electropermanent magnet – a magnetically hard electromagnet arrangement…
Electromagnetic interactions are responsible for the glowing filaments in this plasma globe.
Foam peanuts clinging to a cat's fur due to static electricity. The cat's fur becomes charged due to the triboelectric effect. The electric field of the charged fur causes polarization of the molecules of the foam due to electrostatic induction, resulting in a slight attraction of the light plastic pieces to the fur. This effect is also the cause of static cling in clothes.
Cover of A Treatise on Electricity and Magnetism