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How Does The Microwave Work?
Microwaves are a form of high frequency radio waves similar
to those used by a radio including AM; FM and CB. They are,
however, much shorter than radio waves; approximately 13 cm
long. Electricity is converted into microwave energy by the
magnetron tube. From the magnetron tube, microwave energy
is transmitted and absorbed.
Reflection
Microwaves are re
fl
ected by metal just as a ball is bounced off
a wall. A combination of stationary (interior walls) and rotating
antenna, located underneath the bottom shelf assure that
the microwaves are well distributed within the oven cavity to
produce even heating or cooking of foods.
Transmission
Microwaves pass through some materials such as paper,
glass and plastic much like sunlight shining through a window.
Because these substances do not absorb or re
fl
ect the
microwave energy, they are ideal materials for microwave oven
heating containers.
Absorption
During heating, microwaves will be absorbed by food. They
penetrate to a depth of about 2 cm - 4 cm. Microwave energy
excites the molecules in the food (especially water, fat and
sugar molecules), and causes them to vibrate at a rate of
2,450,000,000 times per second. This vibration causes friction,
and heat is produced just as you will feel heat produced if you
vigorously rub your hands together. The internal heating of
larger foods is done by conduction. The heat which is produced
by friction travels by conduction to the center of the food. Foods
also continue to heat by conduction during standing time.
Because microwaves dissipate, much like sunlight as it reaches
the Earth's surface, they are not stored in food.
TV / Radio / Wireless Equipment Interference
1. Operation of the microwave oven may cause interference
to your radio, TV, Wi-Fi, cordless telephone, baby monitor,
blue tooth, or other wireless equipment.
2. When there is interference, it may be reduced or eliminated
by taking the following measures:
a.
Clean door and sealing sufaces of the oven. See Care of
Your Microwave Oven found on page 17.)
b.
Place the radio, TV, etc, away from the microwave oven
as far as possible.
c.
Use a properly installed antenna, to obtain stronger signal
reception.
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