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When we press the "start" button of an efficient microwave oven we activate a powerful magnetic field, which oscillates in the same frequency band used for TV and radar transmissions, generated by a "cannon" that produces radio waves that will allow food to cook . The microwaves fired from the oven influence the quiet state of the water molecules present in the food, making them vibrate up to 2,500 million times per second. Moving so quickly, these molecules overheat reaching very high temperatures that allow food to cook. Compared to a traditional oven, all energy is absorbed by food, which therefore cooks much more quickly and economically than traditional cooking methods.
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