Panasonic NEC1275 User Manual download pdf (Page 32)

How a Microwave Works

1.Reflection

They will REFLECT off metal. The inner walls of your oven are made of stainless

steel, so that the microwave energy can bounce evenly around the cavity.

Of course, the microwaves will also reflect off metal cooking containers and

accessories, such as saucepans and platters. For this reason, NEVER use the Wire

Rack Shelf on Microwave only.

2.Transmission

The microwaves will TRANSMIT through paper, plastic, glass and china and,

therefore, it is containers made of these substances that are used in microwave

cookery.

3.Absorption

The microwave energy is ABSORBED by the food. The energy penetrates the

outside area of the food causing the molecules to vibrate over 2,450,000,000 times

a second. This vibration causes the water molecules to rub against each other

producing frictional heat which cooks this outer part of the food; the heat is then

couducted through the food to cook the centre. Food, therefore, cooks from the

outside, inwards.

Standing Time

The heat that builds up on the outside of the food is still being conducted to the centre, even after the

microwave oven has switched off. This period is know as the “Standing Time”. The time it takes for the food to

finish cooking will vary depending on its shape, size and type. For example, a jacket potato will need to stand

for at least 5-10 minutes after the end of the cooking time and during this time the temperature at the centre will

increase. A pastry pie that has been reheated will only need a standing time of 1-2 minutes for heat to

distribute evenly.

If the food is put back in the Microwave and heated again before the standing time has elapsed, the food can

very quickly become overcooked.

To get the most from your Panasonic Combi it is helpful to understand how the oven works as a Microwave.

Once connected to an outlet, the electricity flows along the flex and is converted into microwave energy by the

MAGNETRON. Microwaves are ultra high frequency waves, and belong to the same category as radio and

television waves. These are directed into the cavity through the WAVE GUIDE.

When they reach the cavity, the microwaves will behave in one of three ways:

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Panasonic NEC1275 User Manual Page 32