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MICROWAVING PRINCIPLES
Microwave energy has been used in this country to cook and reheat food since early experiments with RADAR in
World War ll. Microwaves are present in the atmosphere all the time, both naturally and manmade sources.
Manmade sources include radar, radio, television, telecommunication links and car phones.
HOW MICROWAVES COOK FOOD
Microwave oven is a Group 2 ISM equipment in which radio frequency energy is intentionally generated and used in
the form of electromagnetic radiation for the treatment of material. This oven is a Class B equipment suitable for use
in domestic establishments and in establishments directly connected to a low voltage power supply network which
supplies buildings used for domestic purposes.
Oven Cavity
Magnetron
Waveguide
Turntable
REFLECTION
CONVERSION CHARTS
WEIGHT MEASURES
15 g
25 g
50 g
100 g
175 g
225 g
450 g
FLUID MEASUREMENTS
1 Cup
1 Pint
1 Quart
1 Gallon
KOR81F7WBSU015UB00,KOR81F7SBSU015UB00(영).indd 14
In a microwave oven,
electricity is converted
into microwave by the
MAGNETRON.
The microwaves
bounce off the metal
walls and the metal
door screen.
VOLUME MEASURES
½ oz.
30 ml
1 oz.
100 ml
2 oz.
150 ml
4 oz.
300 ml
6 oz.
600 ml
8 oz.
1 g.
= 8 fl.oz.
= 16 fl.oz. (UK 20 fl.oz.)
= 32 fl.oz. (UK 40 fl.oz.)
= 128 fl.oz. (UK 160 fl.oz.)
TRANSMISSION
ABSORPTION
Microwave
Water Molecule
The microwaves cause the water molecules to
vibrate which causes FRICTION, i.e. HEAT. This
heat then cooks the food. Microwaves are also
attracted to fat and sugar particles, and foods high in
these will cook more quickly. Microwaves can only
penetrate to a depth of 4-5cm and as heat spreads
through the food by conduction, just as in a
traditional oven, the food cooks from the outside
inwards.
SPOON MEASURES
1 fl.oz.
1.25 ml
3 fl.oz.
2.5 ml
5 fl.oz. (¼ pt)
5 ml
10 fl.oz. (½ pt)
15 ml
20 fl.oz. (1pt)
= 240 ml
= 480 ml (UK 560 ml)
= 960 ml (UK 1120 ml)
= 3840 ml (UK 4500 ml)
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Then they pass through the
cooking containers to be
absorbed by the water
molecules in the food, all
foods contain water to a
more or lesser extent.
Absorption
Vibration
¼ tsp
½ tsp
1 tsp
1 tbsp
16. 10. 13. 오후 2:01
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