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How Your Microwave Oven Works
Mode mlxer
Magnetron
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Microwave ovens are safe. Microwave energy is
not hot. It causes food to make its own heat, and
it’s this heat that cooks the food.
Microwaves are like TV waves or light waves.
You can’t see them, but you can see what they do.
A magnetron in the microwave oven produces
microwaves. The microwaves move into the oven
where they are scattered or stirred by a mode
mixer (like a fan). Microwaves bounce off metal
oven walls and are absorbed by food.
Microwaves pass through glass, paper and most
plastics without heating them so food absorbs the
energy. Microwaves bounce off metal pans so food
does not absorb the energy.
Microwaves may not reach the center of a roast.
The heat around the outside is what cooks the
roast all the way through. This is one of the
reasons for letting some foods (roasts, baked
potatoes) stand for a while after cooking, or for
stirring some foods during the cooking time.
The microwaves disturb water molecules in the
food. As the molecules bounce around bumping
into each other, heat is made, like rubbing your
hands together. This is the heat that does the
cooking.
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