Magnets, Nuclear magnetic resonance (NMR), and quarksMagnets and electricity are intimately related – as in theelectromagneticforce, asingle force.We all know from our experience with magnets as children (refrigerator magnets)what permanent magnets do to each other. They interact.Horseshoe magnetThe north pole of one magnet attractsthe south pole of the other magnet.The North pole of a magnet points to themagnetic north pole in the earth’s magneticfield (or can be determined with anelectromagnet and the right hand rule).Recall that we have learned that theunderlying atomic cause of magnetism isunpaired spins!
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A moving chargegenerates amagnetic fieldProtons and neutrons “moving” in orbitals in the nucleus generate a magnetic moment for the nucleus.Current and magnetic fieldsThis magnetic field can bemeasured by placing thecurrent carrying loop in amagnetic field.Neutrons in the nucleus which are uncharged can generate a magnetic moment? YES! (more on that if you take C460)How do magnets align?stackedSide‐to‐side