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| CATEGORIES ABOUT DIELECTRIC HEATING | |
| electric and magnetic fields in matter | |
| heating methods | |
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There are two principal mechanisms by which a non-conductive material can be warmed in an EM field: # this is rarely considered true dielectric heating. # Dipole rotation: Molecular Rotation occurs in materials containing Polar Molecule s having an electrical Dipole Moment , which will align themselves in the field by rotating in place; as the field Alternates the molecules reverse direction, and the successive rotations causes heat through Friction at the molecular level. Dipole rotation is the mechanism normally referred to as dielectric heating, and is most widely observable in the Microwave Oven where it operates most efficiently on liquid Water , and much less so on Fat s, Sugar s, and frozen water. Outside of cooking the effect can be used to heat solids, liquids, or Gases . Communication microwave frequencies penetrate semi-solid substances like Meat , and living tissue to a distance proportional to its power density. Some environmentalists are concerned that the widespread adoption of microwave-emitting Mobile Phone s could harm human and animal health through dielectric heating. ALTERNATIVE NAMES |
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