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12y ago

Microwaves excite fat and water molecules, which makes these molecules vibrate very fast. The faster an atom vibrates, the hotter it is. An empty plate is not made up of water or fat.

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Q: Why does an empty plate not heat up in the microwave?
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Why do empty dishes do not heat up in a microwave?

Empty dishes do not heat up in a microwave because there is nothing for the microwave energy to interact with and convert into heat. The microwaves require water molecules or other substances to absorb them and generate heat, which is why only food or liquids heat up in the microwave.


Why does a paper plate containing a potato doesnot heat up in microwave oven?

Paper plates are made from materials that do not absorb microwaves well, so they do not heat up in the same way as food or containers designed for microwave use. This is why the paper plate does not heat up when containing a potato in the microwave.


Why does microwave work except no heat?

A microwave transmits waves at just the right frequency to make water molecules vibrate, thus heating anything in range that has water molecules. This can be proven by placing an empty ceramic plate in the microwave, and turning the microwave on; now put something such as a carrot or a piece of chicken on the plate, and heat it again. The plate on its own will have stayed cool, but with the food on it, the food has been heated, and some of the heat has transferred to the plate. One of the problems with microwaves is that they 'leak' microwaves, especially at the front area, which often has a viewing window. The effect of microwaves on human tissue has been thought to cause cancer, but it has not been proven. The effect of microwaves on the brain makes it heat up my approx. 1 degree Celsius - this speeds up the neurons in your brain; this could make a person slightly 'cleverer', however, it could also cause damage.


What happens when you heat food on a glass plate?

If you put a fire under a glass plate or even put a glass plate in the oven it will heat up and break. Depending what is on the top of that plate it will more than likely catch on fire. If you're referring to the microwave then the food will get nice and hot.


What is the function of a microwave?

to heat up food


Does a microwave use heat energy?

No, a microwave uses electromagnetic radiation to heat up the water molecules in food, causing friction that heats up the food. It does not use heat energy directly.


Will a microwave heat up if sucked into a black hole?

yes, because if it sucks up even just the microwave light, it will be converted into heat. ~miles28~


What happens when you put a empty crisp packet in the microwave?

No because it will blow up the bag and break your microwave and you will have to buy a new one. :)


How do you heat up a bowl of soup in the microwave?

what you do is u just put a bowl in the microwave and u heat it up for about 30 sec then if its still cold do another 10 secounds


Could you put the progesso can in the microwave to heat it up?

Not if the can is metal.


Can you put a towel in the microwave to heat it up?

Yes you can I am guessing, have to look it up.


Is it important to have a magnetron in a microwave?

The microwave cannot cook food without the magnetron that causes the food to heat up!