Microwave oven

A microwave oven, or simply microwave, is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. This induces polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating. Microwave ovens heat food quickly and efficiently; the heating effect is fairly uniform in the outer 25–38 mm (1–1.

5 inches) of a homogeneous, high-water-content food item.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

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