a: as long as the temperature of all objects in nature is above the absolute temperature of zero, they constantly transmit heat in the form of electromagnetic waves. this way of transmitting energy is called radiation.
q: where is the radiation in our life?
answer: household appliances: TV, refrigerator, air conditioner, microwave oven, vacuum cleaner, computer, etc.
office equipment: mobile phone, computer, copier, electronic instrument, medical equipment, etc.
home decoration: marble, composite floor, wall wallpaper, paint, etc.
surrounding environment: high-voltage lines, substations, TV (broadcast) signals.
a: generally, being polluted by electromagnetic radiation will cause headaches, insomnia, arrhythmia and other central nervous system problems. At the same time, it may have an impact on some people's eyes, such as decreased vision and skin diseases, and may also cause cancer. Therefore, electromagnetic radiation has been listed by the World Health Organization as the fourth largest environmental pollution source after water, atmosphere and noise, and it has become an invisible "killer" that harms human health. Therefore, it is imperative to protect electromagnetic radiation.
Q: Is radiation harmful to pregnant women?
a: for embryos, electromagnetic radiation will prevent their early cell division and even cause cell death, and at the same time prevent the normal development of placenta. Specifically, 1-3 months is the embryonic period, and being exposed to strong electromagnetic radiation may lead to abortion or fetal limb defect or deformity; 4-5 months is the period of fetal formation, and electromagnetic radiation may damage the central nervous system, resulting in mental retardation of infants; 6-1 months is the fetal growth period, and its main consequences are low immune function, weak constitution after birth and poor resistance. According to the statistics of China eugenics association, among the more than 2 million newborns born every year in China, nearly 1.2 million are defective children caused by radiation.
q: which people are most exposed to radiation?
A: According to the detailed data provided by the World Health Organization, the International Committee on Non-ionizing Radiation Protection and other authoritative departments, people such as financial and securities industry, radio and television industry, IT industry, electric power industry, communication industry, civil aviation, railway, medical industry with high-frequency physiotherapy equipment, scientific research industry with a large number of instruments and meters, industry with microwave electrical equipment, industry with quite popular modern office equipment, and human beings with modern life tools such as computers and mobile phones are identified as having electromagnetic radiation.
q: what are the diseases directly caused by radiation?
Answer: Electromagnetic radiation will directly harm the reproductive system, nervous system and immune system of human body, and it is the main inducement of cardiovascular disease, diabetes and cancer mutation, and the inducement of abortion, infertility and teratoma in pregnant women, and it can directly affect the development of body tissues and bones of minors, resulting in decreased vision, memory and liver hematopoietic function. In severe cases, it can lead to retinal detachment.
q: is the radiation from the microwave oven large?
a: microwave ovens heat food by releasing energy generated by microwaves, which belongs to electromagnetic radiation. According to the radiation evaluation report, the electromagnetic radiation of microwave oven is six times that of other household appliances. < P > Q: What will happen if you are exposed to computer and mobile phone radiation for a long time?
a: 1. skin aging is accelerated.
2. The incidence of various malignant tumors increases.
3. The decrease of sperm activity and quantity leads to infertility.
4. Embryo dysplasia, increased abortion rate of pregnant women and increased incidence of teratoma.
5. The resistance is reduced and the growth and development are delayed.
6. neurasthenia symptoms such as headache, insomnia and arrhythmia.
q: what should I pay attention to when working in front of the computer for a long time, and how to prevent radiation?
A: 1. You can add a radiation filter in front of the screen
2. Keep a correct sitting posture, preferably with an armrest.
3. The best distance between eyes and screen should be kept at about 5 cm, and the best angle of sight should be 1-2 degrees under horizontal sight.
4. there should be suitable light in the room, and the light in the computer room should not be too strong, which is generally half the brightness required by ordinary offices.
5. Put a few pots of cactus beside the computer, which can effectively absorb radiation.
q: what can I eat to prevent radiation?
a: kelp, tea, mung beans, carrots, cherries, figs, apples and bananas.
q: how to prevent radiation at home?
a: 1. don't put household appliances too concentrated or often use them together to avoid exposing yourself to the danger of excessive radiation. In particular, televisions, computers and refrigerators should not be concentrated in the bedroom.
2. When the electrical appliances are suspended, it is best not to put them in standby state, because weak electromagnetic fields can be generated at this time, and radiation accumulation will also occur for a long time.
3. Keep a safe distance when using all kinds of electrical appliances. For example, the distance between the eyes and the TV screen is generally about 5 times the width of the screen; Leave one meter away after the microwave oven is turned on, and pregnant women and children should stay away from the microwave oven as far as possible; When using the mobile phone, the distance between the head and the antenna of the mobile phone should be as far as possible, and it is best to use separate headphones and microphones to answer the phone
4. The electromagnetic radiation released at the moment when the mobile phone is connected is the largest, so it is best to answer the phone when the mobile phone rings for one or two seconds or when the phone rings twice.
5. Eat more foods rich in vitamins A, C and protein, such as carrots, tomatoes, kelp, lean meat and animal liver, so as to strengthen the body's ability to resist electromagnetic radiation.
Q: Is radiation harmful to children?
A: In order to make children better adapt to society in the future, computer classes are offered from primary school. Some children even grow up with computers when they are born, but many people don't know the influence of computer radiation on the growth of teenagers. Excessive electromagnetic radiation directly affects children's brain tissue development and bone development, resulting in decreased vision and liver hematopoietic function, and in severe cases, retinal detachment. Electromagnetic radiation can significantly reduce the content of trace elements and calcium in bone tissue, thus affecting the growth and development of children and leading to osteoporosis!
q: how does radiation affect human life and health?
a: 1. a car passing in front of a residential building will make the TV picture jump;
2. Making phone calls will affect the normal use of pacemakers and interfere with the normal flight of aircraft;
3. When the mobile phone is used, strong high-frequency microwave radiation can be generated near the transmitting antenna at the top. When the human head is exposed to this strong high-frequency microwave radiation, the direction of the human brain and blood will change, which may cause damage and pathological changes to the human brain for a long time.
4. Under the influence of electromagnetic radiation, the pineal gland in human brain will slow down the secretion rate of melatonin, which will affect the functions of nervous system and endocrine system, and make people have headaches, nervousness, restless sleep and fatigue in the morning. At the same time, electromagnetic radiation directly damages the DNA of the main gene in human cells, prompting gene mutation to cause cancer.
5. A harmful substance called dibenzofuran bromide will be produced on the fluorescent screens of televisions and computers when they are working, which is carcinogenic. When a television is used continuously for three days, the content of dibenzofuran bromide measured in the room is as high as 2.7 μ g/㎡, which is equivalent to the measured value at a crossroads. This pollution is more serious in computer-intensive computer rooms, especially new computers.
6. Effects on human cardiovascular system: palpitation, insomnia, menstrual disorder in some women, bradycardia, decreased cardiac output, irregular sinus heart rate, leukopenia, decreased immune function, etc.
7. Long-term exposure to high electromagnetic radiation will change blood, lymph and cell protoplasm: it will affect the circulatory system, immunity, reproduction and metabolic functions of the human body, seriously induce cancer and accelerate the proliferation of cancer cells in the human body.
8. Effects on human reproductive system: sexual dysfunction, low sperm quality in men, spontaneous abortion and fetal malformation in pregnant women.
q: which household appliances have the most serious radiation?
a: 1. microwave oven
vigilance index: ★★★★★ ★
microwave ovens use the thermal effect of microwaves to heat and cook food. Studies have shown that the strong electromagnetic waves generated by microwave ovens may cause diseases if they exceed the standard seriously.
Countermeasures:
1. It is best to leave the microwave oven about one meter after it is turned on.
2. You can wear a shielding apron and a shielding gown when cooking food in the microwave oven.
3. It is best to replace the microwave oven after 6 to 7 years of use.
Second, the computer
Alert index: ★★★
Coping methods:
1. If you have to use the computer for a long time, you should pay attention to washing your face in time.
2. You should keep a correct posture when using the computer, and the distance between people and the computer screen should be kept above 7CM.
3. The intensity of electromagnetic radiation at the back and sides of the computer is no less than that of the screen, and it should be kept above 12CM
3. TV
Alert index: ★
Countermeasures:
1. TV should not be too concentrated with other electrical appliances to expose itself to the danger of excessive radiation.
2. The distance between the TV and people should be at least 2 meters away and not too close to the screen.
3. It is best not to put televisions and other electrical appliances in the bedroom.
Q: What is the radiation from computers?
a:. According to the international MPRⅡ radiation safety regulations, the radiation exposure must be less than or equal to 25V/m within a distance of 5cm. But do you know how much radiation the computer is? Computer radiation: 1. keyboard 1V/m2, mouse 45V/m3, screen 218V/m4, host 17V/m5, Notebook25V/m
Q: How does radiation harm human body?
a: 1. thermal effect: more than 7% of human body is water, and water molecules rub against each other after being radiated by electromagnetic waves, causing the body to heat up, thus affecting the normal work of internal organs.
2. Non-thermal effect: There are weak electromagnetic fields in human organs and tissues, which are stable and orderly. Once disturbed by external electromagnetic fields, the weak electromagnetic fields in a balanced state will be destroyed and the human body will be damaged.
3. Cumulative effect: After thermal and non-thermal effects act on the human body, the damage to the human body has not yet had time to repair itself (commonly referred to as human endurance-internal resistance), if it is radiated by electromagnetic waves again, the degree of damage will accumulate, which will become permanent pathological and life-threatening. For groups exposed to electromagnetic radiation for a long time, even if the power is very small and the frequency is very low, unexpected lesions may be induced, and we should be vigilant.
q: when does the mobile phone radiate heavily?
a: generally speaking, the radiation of a mobile phone is less when it is in standby, and more when it is in call, but when the mobile phone number has been dialed but not connected, the radiation is the largest, and the radiation amount is about three times that of standby. These radiations may change human tissues and have adverse effects on human health
1. Don't hang your mobile phone on your chest: Many girls like to hang it on your chest, but research shows that hanging it on your chest will have a certain impact on your heart and endocrine system. Even in the standby state with less radiation, the electromagnetic wave radiation around the mobile phone will cause harm to the human body. People with cardiac insufficiency and arrhythmia should pay special attention not to hang their mobile phones on their chests. Some experts believe that electromagnetic radiation will also affect endocrine function, leading to menstrual disorders in women. In addition, electromagnetic radiation will also affect the normal cell metabolism, resulting in the disorder of metal ions such as potassium, calcium and sodium in the body.
2. The mobile phone will kill sperm if it is placed in the trouser pocket: some medical experts point out that if the mobile phone is often hung near the waist or abdomen of the human body, the electromagnetic waves generated when it sends and receives signals will radiate to the sperm or eggs in the human body, which may affect the user's reproductive function. The British experimental report pointed out that mice were irradiated by mobile phone microwave for 5 minutes, which would produce DNA lesions; Human sperm and eggs are exposed to microwave radiation from mobile phones for a long time, and DNA lesions may also occur.
3. Cell phone hanging around the waist will lead to infertility: Wu Lihui, an attending physician of infertility in Taipei Peace Hospital, has observed for many years that if a cell phone is often hung around the waist or abdomen of a human body, the electromagnetic waves generated when it sends and receives signals will radiate to sperm and eggs in the body, which may affect the user's reproductive function
4. The chance of getting eye cancer with a cell phone is three times higher: a German study found for the first time that a cell phone may cause eye cancer because