| 31. | There is an ideal n ?n ?n lattice of aligned magnetic dipoles, d units apart.
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| 32. | So the most basic entity, corresponding to a point electric charge, is a point magnetic dipole.
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| 33. | In the physically correct Amp�re model, magnetic dipole moments are due to infinitesimally small loops of current.
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| 34. | Likewise, the electric field from a magnetic dipole behaves like the magnetic field from an electric dipole.
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| 35. | Following is the formula for moving charge; for the forces on an intrinsic dipole, see magnetic dipole.
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| 36. | The magnetization field of a region points in the direction of the average magnetic dipole moment in that region.
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| 37. | Unfortunately, the small magnitudes of nuclear magnetic dipoles also makes them less inclined to align to external fields.
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| 38. | A changing external magnetic field causes the magnetic dipoles to rotate, changing the dimensions of the crystal lattice.
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| 39. | In paramagnetic materials, the magnetic dipole moments of individual atoms spontaneously align with an externally applied magnetic field.
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| 40. | That means the magnetic field from a magnetic dipole behaves similarly to the electric field from an electric dipole.
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