Panasonic NNST452W Operations Instructions download pdf (Page 17)

Microwaving principles

Magnetron

Oven Cavity

Turntable

Waveguide

Microwave energy has been used in this

country to cook and reheat food since earOy

e[periments with radar in :orOd :ar ,,.

Microwaves are present in the

atmosphere aOO the time, both naturaOOy

and from manmade sources. Manmade

sources incOude radar, radio, teOevision,

teOecommunication Oinks and mobiOe

phones.

,n a microwave oven, eOectricity is converted

into microwaves by the MAGNETRON.

How Microwaves cook food

The microwaves cause the water moOecuOes

to vibrate which causes FRICTION, i.e.

HEAT. This heat then cooks the food.

Microwaves are aOso attracted to fat and

sugar particOes, and foods high in these wiOO

cook more TuickOy. Microwaves can onOy

penetrate to a depth of   5 cm 1ô ² 

inches and as heat spreads through the

food by conduction, Must as in a traditionaO

oven, the food cooks from the outside

inwards.

 Important notes

The dish used to cook or reheat the food

wiOO get warm during cooking, as the

heat conducts from the food. Even in

microwaving, oven gOoves are reTuired

MICROWAVES CANNOT PASS

THROUGH META/ AND THERE FORE

META/ COOKING UTEN SI/S CAN

NEVER BE USED IN A MICROWAVE,

FOR COOKING ON MICROWAVE ON/Y.

ReÅection

The microwaves bounce off the metaO waOOs

and the metaO door screen.

Transmission

Then they pass through the cooking

containers to be absorbed by the water

moOecuOes in the food, aOO foods contain

water to a more or Oesser e[tent.

Foods Not Suitable for Cooking by

Microwave Only

Yorkshire Puddings and 6oufÁes. This is

because these foods reOy on dry e[ternaO

heat to cook correctOy, do not attempt to

cook by micro wave.

Foods that reTuire deep fat frying cannot be

cooked either.

Standing Time

:hen a microwave oven is switched off,

the food wiOO continue to cook by conduction

² 1OT %Y M,&RO:$9E E1ER*Y. +ence

6T$1',1* T,ME is very important in

microwaving, particuOarOy for dense foods

i.e. meat, cakes and reheated meaOs refer

to page 1.

 Boiled Eggs

'o not boiO eggs in your microwave. Raw

eggs boiOed in their sheOOs can e[pOode and

cause serious inMury.

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Panasonic NNST452W Operations Instructions Page 17

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