0
Yes, items in a microwave oven can be said to absorb microwaves. The microwave energy causes what is called dielectric heating, and this activity takes energy from the microwave beam.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What does it mean when a microwave oven uses convection microwaves?
A convection microwave uses both microwaves and convection heating to cook the food. The convection cooking allows the food to be browned and cooks the outer part of the food while the microwaves cook the interior of the food.
Can microwaves in a microwave oven pass through a material?
Yes, microwaves inside of a microwave oven do indeed pass through a material - for example - a glass casserole dish or other cooking vessel - to reach the food inside the vessel to begin the cooking process. The microwaves also pass through paper, plastic and similar materials - that is why one can cook with such materials in a microwave oven. Microwaves however do not pass through metal objects, but rather often cause arching in a microwave oven, and thus can not be used in a microwave oven. Properly working microwave ovens do not allow the microwaves to pass from inside the oven to the outside world.
A microwave oven is 70 percent efficient if it is supplied with 4000 jouls of electrical energy how much heat is used to actually cooked the food?
A microwave oven does not use heat to cook food like a conventional oven, instead it uses microwaves to cook the food. The microwaves produce the heat inside the food, thereby cooking the food from the inside out.
Why do microwave trays rotate?
Because a microwave oven does not target one area of the oven, microwaves are random and a revolving tray captures more microwaves.
What are the benefits of employing Commercial Microwave Ovens?
The benefits for employing a Commercial Microwave Oven include that the microwave oven can heat your food without becoming hot itself thus eliminating the chances of burning yourself on the sides of the oven. The cookware is also cooler than the food due to the fact that is transparent to microwaves. Microwaves also cook your food faster than a traditional stove.
Is cooking food using a microwave oven an example of radiation?
Yes, since the oven heats food by irradiating it with microwaves. Microwaves are an example of electromagnetic radiation, having a frequency lower than that of visible light.
Will food stored next to microwaves be contaminated?
No, microwave ovens are constructed in such a way that no 'microwaves' can escape the oven, so your food or anything else stored close by are safe.
Why do microwaves not brown foods?
Microwaves heat food by heating the moisture in the food. If the microwave does not have a browning element in it, there is nothing to cause the food to brown. Some foods can be browned in a microwave oven, if there is some fat content. But this may also over cook the food.
Explain the use of the turntable in a microwave oven?
A turntable in a microwave oven rotates the food being warmed or cooked, with evenness of heating being the aim. A microwave oven is a sealed box, a Faraday cage, into which microwaves--nonionizing radiation of about 2.45 GHz frequency--are injected. The microwaves are generated by a magnetron and fed into the box at only one point via a waveguide. So better ovens will use a microwave stirrer, a turntable, or both to help the microwaves more evenly reach the food.
Why can not Plastic microwave dishes can not be used in conventional oven?
Most plastics are not heated by microwaves and will not be damaged. They also allow microwaves to enter the food from all directions, metal bowls would block microwaves except from the top causing uneven cooking.
Can you leave plates of food to be eaten later on-top of a microwave if the microwave is used in the mean time will it not keep reheating the food on top of the microwave?
Microwaves should not be leaking from the microwave oven, however leaving food out and not refrigerated can be a health hazard in itself.
Does a microwave use light energy?
yes its does because when the microwave is on and the plate is rotating,the light is actually heating the food. It is not the visible light that does the heating, that is provided simply so you can see inside the oven. It is the microwaves that do the heating, by agitating molecules of water in the food. That's why you can't heat dry food in microwave oven. The microwaves are EM radiation like visible light, but a different wavelength.
