Operating Principle - Brandt BKS7131LX User Manual

Description of the oven

OPERATING PRINCIPLE

The microwaves used for cooking are electromagnetic waves. They are commonly found in our environ-
ment in the form of radio waves, light and infrared rays.
Their frequency is in the 2450 MHz range.
Their behaviour:
· They are reflected by metals.
· They travel through all other materials.
· They are absorbed by water, fat and sugar molecules.
When food is exposed to microwaves its molecules begin moving rapidly, causing it to heat up.
The penetration depth of waves into the food is approximately 2.5 cm; if the food is thicker, the centre
of the food will be cooked by conduction, as in conventional cooking.
Note that microwaves cause a simple thermal phenomenon within food and are not harmful to health.
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