What kind of wave is a microwave in a microwave?
I have always heard people say that microwave-heated food will produce carcinogens, the nutritional value of food will also be lost, and microwave radiation will cause Causes brain damage, is this statement really scientific? It is so exaggerated that it can cause brain damage? Don’t scare yourself first, let’s first understand what kind of wave the microwave of a microwave oven is.
What kind of wave is microwave? How is it heated?
Microwave refers to electromagnetic waves with a frequency of 0.3GHz-300GHz. Porcelain, microwaves pass through almost without being absorbed. And water and food will absorb microwaves and make themselves heat. For metal objects, microwaves will be reflected. So why can microwave ovens heat food?
Usually food contains water and other polar molecules. The electromagnetic wave in microwave ovens rotates two billion times per second. “The whole body is hot”, and the temperature naturally rises sharply in a short period of time. Non-polar molecules, such as air or some containers, are not heated. So why do we usually feel that the container is hot when we heat food? This is because the food is heated, and the utensil is “hot” by the high temperature food. Once the microwave stops, the rotating electric field disappears, and the water molecules quiet down. It should be noted that in this process, the water molecules themselves are not changed by the microwave.
Is microwave heating harmful to the body
Microwave heating is fast and saves electricity, does not destroy the nutrients in the food, and preserves the color , all taste. But is microwaved food harmful to the body?
Microwave heating is to use a magnetron to generate microwaves, and then irradiate the microwaves into an empty box made of metal on all six sides. The food is placed in the box, and the microwaves are reflected back and forth on the wall of the box. It penetrates into the food to be cooked in all directions to heat the food. The wall of the box does not absorb microwaves, only the container and the food in the box are heated, so the efficiency is high and the speed is fast. Because of the rapid heating rate, there is very little damage to the nutrition of the food.
Is it true that microwave ovens are dangerous?
The rumor debunks. There are rumors that microwaved food produces carcinogens. Microwave heating will not produce new carcinogens due to the destruction of molecular structure. It is convenient and quick to heat food in microwave ovens, and there is no theory that microwave radiation causes cancer. Microwave radiation is also within the safe range, and will not cause serious damage to the brain.
MicrowavesDoes heating food cause cancer?
Because microwaves are a type of radiation, many people naturally think that It can cause cancer. Some people even think of the words “Please stay away from radiation” on the door when taking X-rays in the hospital. In fact, this is not a level at all. Microwaves are electromagnetic waves, essentially the same thing as radio waves, infrared, and visible light used in radios and telegraphs. The only difference between them is the frequency.
Microwaves have higher frequencies than radio waves and lower frequencies than infrared and visible light. Radio waves and visible light do not cause cancer, so it is not difficult to understand that microwaves with frequencies between them also do not cause cancer. In fact, the “radiation” mentioned here refers to the energy of microwaves that can be emitted, which is completely different from the radiation generated by X-rays and radioisotopes. Although X-rays are also electromagnetic waves, their frequency is much higher than that of microwaves, so the energy is also high, and radioactive isotopes emit particles during the decay process, so they can make living organisms cancerous. The microwave energy will be converted into heat after being absorbed by the food, and will not make the food “radioactive” or “contaminated”.
Radiation is everywhere in life
In fact, in daily life, electronic products such as mobile phones, televisions, and computers all generate radio waves. If the harm of microwave oven is compared horizontally, it is the same as computer radiation and mobile phone radiation. Moreover, the frequency of use of microwave ovens is much lower than that of mobile phones and computers, and the harm it produces is actually much smaller than that of using mobile phones and computers all year round.
How to use a microwave oven correctly?
When we use a microwave oven, we only need to pay attention to the following three points to avoid radiation.
1. Try to stay away from the microwave when using it. Pregnant women should try not to get too close to the microwave.
2. Second, try to buy qualified microwave oven products to ensure that the products are not damaged and microwaves will not leak.
3. Use the correct container for heating objects to avoid explosion.
Although microwave radiation can be harmful, don’t be too nervous or make a fuss. As long as you choose reasonably and use the protection properly, you can fully enjoy the comfortable life brought by high technology.
Declare: The above methods are derived from the program system index or shared by netizens. They are for your reference only and do not represent the research views of this website. sex and authority.
