The heating process of food item containing water molecules dpends upon the shape of the item . Dielectric spheres one or more wavelengths in diameter form a special class of microwave antenna structure. When a dielectric sphere is immersed in a microwave field the spheres concentrate the electric field lines along an axis . If the sphere is slightly elongated, the field will usually align with the longest axis. The concentrated microwave field inside the food item quickly heats the stuff to a high temperature after only 10 seconds of heating.
Moderation Team
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