In a paper on microwave properties, Mudgett (1986) provides data on

dielectric constants and loss tangents for raw potatoes. For a microwave frequency of 2450 MHz and at 20°C, the dielectric loss is 64 and the loss tangent is 0.23. Determine the attenuation factor, the fi eld penetration depth,

and the depth below the surface of a potato at which the microwave power

is reduced to one-half of the incident power.

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