The document discusses how microwaves work in microwave ovens. A magnetron located inside the microwave emits microwaves between 300 MHz to 300 GHz in wavelength. These microwaves spread and are reflected by the metal walls of the oven and absorbed by water molecules in food. The microwave energy causes the water molecules to vibrate faster through friction, generating heat used to cook food in a short time.

5. Microwave with a wavelength
between 1 millimeter to 1 meter. Or has
frequency between 300 MHz (0.3 GHz) up to
300GHz.
Microwave

9. MICROWAVE

10. Magnetron located in
the microwave oven emits
microwaves in a
microwave oven. Then it
spread to the region of
maturation through an
open gap at the top of the
oven
Reflected the
microwave walls made ​​of
metal and are absorbed
by food water molecules
If a molecule is
exposed to
microwaves,
microwave energy is
absorbed by the
molecules so that
food can be cooked in
a short time with the
help of a propeller
microwave
How The Microwave
Works

11. molecules move faster
vibrations caused
friction, which causes
heat used to cook food
spread through direct
radiation from the heat
source to the food being
cooked and raw food to
be cooked
Substances which will
also absorb heat from
the microwave is
sugar, salt and fat.