Скачать или смотреть Why Magnets Are Magnetic

#magnet #magnetic #electromagnet #magnetism #science #magneticfield #physics #neodymium
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Are magnets magic? From where does magnetic force come? What are magnetic materials? Diamagnetic, paramagnetic, ferrimagnetic, ferromagnetic and antiferromagnetic materials have magnetic properties, but some of them are too weak to notice. Why some magnets are permanent and some are just temporary induced magnets? It depends on magnetic material's permanence, coercivity and remanence. Curie temperature can change how magnetic domains are aligned and make materials magnetized or demagnetized. All of this can be explained by the existence of electromagnetic force and how it affects atoms and materials.
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0:00 Is it magic?
0:20 Magnetism
2:47 Magnetic materials
4:43 Temporary magnets
6:51 Permanent magnets
9:25 Electromagnets
10:49 Just physics
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Sources:
https://www.tf.uni-kiel.de/matwis/ama...
https://www.ncei.noaa.gov/news/HDGM