why do microwaves heat food from the inside out?

Answer 1

This is a myth.

High frequency microwaves simply vibrate the molecules in the food, and this high frequency energy that gets the molecules dancing all around is converted to heat energy.

A regular convection oven heats from the outside in - a microwave oven heats pretty much evenly throughout the food.

Answer 2

In some cases this is true, for example with minced pies. The filling will get hot because of the high water content, but the pastry will remain cool because of the low water content.

In general this is not true. Microwaves penetrate through the food and are absorbed within the food. More are going to be absorbed near the surface so the surface will get hotter.
Conventional ovens use infra red and/or convection. This only heats the outside.

Answer 3

Microwaves are just that. The radio waves they produce excite the molecules in the food causing them to crash into each other creating friction. Each microwave is moving at the speed of light and the waves are so small that the molecules vibrate very fast. If the waves were larger the molecules would move much slower not creating the same amount of friction.

Answer 4

I guess microwaves heat the food using radiation method. It is not like convection and conduction of heat. But I am not sure. I will have to find out.

Answer 5

The simple short general answer is no.

You can do a simple test. A frozen dinner, and if you cook it in microwave for a relatively short time.

Take it out and cut it open, you will find the outside is defrosted but the inside still frozen solid.

Answer 6

They don't.

Put a lump of ice cream in the microwave and switch it on for 30 seconds. Take a look, it looks a bit melty on the outside. Now cut it in half, melty on the outside, frozen on the inside.

Answer 7

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Answer 8

microwaves absorb water present in food
for eg chicken looses all of it's water

Answer 9

they dont.

microwave ovens heat the water in foods.