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How does a LG Microwave Work?

The LG microwave oven consists of a magnetron tube, which converts electricity into high frequency microwaves. Microwaves are a form of electromagnetic energy, like light waves or radio waves, and occupy a part of the electromagnetic spectrum. Microwaves cause food molecules to vibrate rapidly, creating friction that produces heat which then cooks the food. In other words, food cooked in a LG microwave simply absorbs microwave and turns their energy into thermal energy, which cooks the food. Microwaves are colorless, odorless, tasteless, and these are not radioactive.

Microwave oven is one of the most energy efficient appliances money can buy today. For example, it takes 18 times the electricity to bake a potato in a regular oven than in a microwave. Microwaves cook from the outside towards the center of the food.

Microwave ovens are faster for most cooking jobs because the energy heats the food and not the oven or the containers. They dont also heat up the kitchen, especially in the summer time like the other cooking appliances.

Can microwaves hurt you ?

A small amount of microwaves wont hurt you. Microwaves are anyways present all around us, in the form of satellite transmissions, cellular telephones, and even by the thermal radiation from our surroundings. A properly constructed microwave does not leak any microwaves.

Why cant I use a metal container in a microwave ?

Microwaves causes currents to flow in metals, these currents may heat the metal hot enough to cause a fire. Therefore, it is not a good idea to use metal containers in a microwave.

Microwave tips to remember:

Do not use metal pots and pans, or metal utensils.

Food is completely cooked if the bottom of plate feels warm in the center.

Cook small foods, under 2 inches in diameter, for less time, since the heat penetrates more quickly from all sides.

To prevent food from drying out, cover the food with a vented cover whenever cooking or re-heating.

Always use less salt and seasoning than normal when cooking in the microwave, since this draws out the moisture and will toughen the food. Add the salt later in the cooking process.

Use less water when microwaving, due to the shorter cooking time. Stir liquids periodically when microwaving, and stir the outer sections, which cook faster, into the center of the dish and center sections to the outside. This equalizes the temperature throughout the food.

Cook dense food for more time in the microwave, since dense food cooks slower than porous food.

Arrange food with thickest parts, and bulky vegetables on outside of plate and quick-to-heat less-dense foods in the center. Spread a single serving of a main dish in an even layer on plate.

Turn large food over occasionally in the microwave, for more even cooking.

Microwave cooked food require some standing time, since they continue to cook for a few minutes after they are removed from the microwave oven. Cover this food with plate, waxed paper or paper towel to direct the heat back into the food.

Make sure not to block the vents of the microwave oven, or the oven will overheat.

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Microwave Cooking

You often hear that microwave ovens cook food "From the inside out." What does that mean? Heres an explanation to help make sense of microwave cooking.

Lets say you want to bake a cake in a conventional oven. Normally you would bake a cake at 350 degrees F or so, but lets say you accidentally set the oven at 600 degrees instead of 350. What is going to happen is that the outside of the cake will burn before the inside even gets warm. In a conventional oven, the heat has to migrate (by conduction) from the outside of the food toward the middle. You also have dry, hot air on the outside of the food evaporating moisture. So the outside can be crispy and brown (for example, bread forms a crust) while the inside is moist.

n microwave cooking, the radio waves penetrate the food and excite water and fat molecules pretty much evenly throughout the food. No heat has to migrate toward the interior by conduction. There is heat everywhere all at once because the molecules are all excited together. There are limits, of course. Radio waves penetrate unevenly in thick pieces of food (they dont make it all the way to the middle), and there are also "hot spots" caused by wave interference, but you get the idea. The whole heating process is different because you are "exciting atoms" rather than "conducting heat."

In a microwave oven, the air in the oven is at room temperature, so there is no way to form a crust. That is why microwavable pastries sometimes come with a little sleeve made out of foil and cardboard. You put the food in the sleeve and then microwave it. The sleeve reacts to microwave energy by becoming very hot. This exterior heat lets the crust become crispy as it would in a conventional oven.

How to Install an Overhead Microwave

  • Step 1Decide where youll be mounting the microwave. Use a stud finder or the knocking method to determine if there are two studs in place.
  • Step 2Check the packaging for a mounting bracket and instructions. The microwave should come with both.
  • Step 3Make a hole in the wall behind where the microwave will be mounted. Snake the electrical cord through this hole and down to where your outlet is. This will hide the ugly cord.
  • Step 4Rip out the drywall if there isnt a stud where you need one. Mount a 2-by-4 piece of wood between the current studs to offer support.
  • Step 5Use a screwdriver or electric drill to bolt the mounting bracket into the wall. Make sure your screws go through two studs or the wood support you added.
  • Step 6Follow the instructions to get the back plate into place. Lift the microwave unit over your head and rest the bottom on the back plate. Roll it into place until it locks.
  • Step 7Attach the microwave to the cabinets above to make it flush.