1. This type of dipole field near sources is called an electromagnetic " near-field ". 2. The Sun does not support long-term radiation belts, as it lacks a stable, global, dipole field . 3. They apply not only for a perfect dipole field , but also for fields that are approximately dipolar. 4. The assumption of a coaxial magnetic dipole field implies that only global scale structures can be simulated. 5. All known magnetic sources give dipole fields . 6. The rotating steady force creates a rotating dipole field which has an influence in the geometric near field. 7. Changing " electric " dipole fields , as such, are used commercially as near-fields mainly as a source of dielectric heating. 8. The SAA is the near-Earth region where the Earth's magnetic field is weakest relative to an idealized Earth-centered dipole field . 9. Formally, the field can be expressed as a multipole expansion : A dipole field , plus a quadrupole field, plus an octupole field, etc. 10. The field of a point dipole has a particularly simple form, and the order-1 term in the multipole expansion is precisely the point dipole field .
