What is the principle of microwave oven?
Answer:
in an ordinary gas or electric oven,heat from a flame or from heated coil strikes the cooking vessel.which becomes hot.the heat is conducted in to the out side of food and from there to .microwaves,however,pass through cooking vessels made of pottery,china,plastic,and even paper without heating them,the way ordinary radio wades pass through most substances.but the microwaves cause water molecules to vibrate rapidly,and their friction produces heat.
more power than a standard microwave
It uses micro waves to heat and cook food? o__O
Well, a device called a Magnetron "shoots" high frequency radio waves to heat items up.
Who cares about the principles it's quick, easy and warms up my yummy food lol!
:P
nai nai xx
i think the fridge is the principal of the whole kitchen
you may find the answer at www.howstuffworks.com
i've learned so many things at that site but i'm not in the mood to look for the answer to you question. but what ive given you is more than just answer to your question.
It has to do with water. A microwave oven produces energy at a wavelength that causes water molecules to energize and produce heat. If an item is without some form of water it will not heat up from a microwave.
A microwave oven shoots out radiation waves from a magnetron that react with the water molecules in food. These water molecules heat up, and are generated throughout thye food, making the entire product heat up.
Did you know: The microwave was in use many years before and did not heat up food. It was actually used for performing lab experiments. However, it began to get used for heating up food when a scientist walked by the machine with a chocolate bar in his pocket?
Sincerely,
Young Einstein
A microwave uses a magnetron tube to produce microwave radiation. This radiation is reflected off of a metal fan into the cavity of the oven, where it interacts with and excites asymmetrical molecules such as water and fats, causing them to heat up.
break the word down...
microwave - uses microwaves
oven - it is an oven
conclusion...
an oven that uses microwaves to heat things.
and if you dont know what an oven is then god help you. hahah
The magnetron tube in a microwave oven is tuned to the resonant frequency of water molecules. Because all food contains water, the molecular resonance causes the food to absorb microwave vibrations in the form of heat energy.
Because every drop of water in your macaroni and cheese entree serves as a heat source, the heat is quickly distributed throughout the food, so it heats much more quickly than it does in a conventional oven or in a pan on the stove.
www.howstuffworks.com is a good place to look, or do an internet search on "magnetron" or "microwave oven."
The oven shoots microwaves (waves with wavelenght less than 10^-6 m), which have the property to agitate water molecules.
When the water molecules vibrate, they generate heat (because of the friction), and eventually heat up meals and any other thing with water on it.
A device called a magnetron emits Radio Frequency waves (at about 2.45 GHz, similar to what WiFi uses) into the microwave chamber.
Those waves excite water molecules, making them move around faster, bumping into things which releases heat, and presto! your food gets warmer.
we want to fast coock in micro owen if the waveleth is sort the energy will high.this as per my knowledge.if it is wrong then i m sorry.
A microwave oven uses microwaves to heat food. Microwaves are radio waves. In the case of microwave ovens, the commonly used radio wave frequency is roughly 2,500 megahertz (2.5 gigahertz). Radio waves in this frequency range have an interesting property: they are absorbed by water, fats and sugars. When they are absorbed they are converted directly into atomic motion -- heat. Microwaves in this frequency range have another interesting property: they are not absorbed by most plastics, glass or ceramics. Metal reflects microwaves, which is why metal pans do not work well in a microwave oven.
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