1. Ultra-low frequency household appliances (rated frequency is 50 Hz)
Electric shaver, vacuum cleaner, washing machine, electric iron, coffee maker, humidifier, hair dryer, air conditioner, rice cooker, induction cooker, blender, electric blanket, fluorescent lamp, refrigerator, etc.
Safety tip: The shorter the use time, the better.
Under normal circumstances, these electrical appliances will not pose much threat to human body, but some of them may also cause a series of health problems if they are not carefully controlled in the frequency, time and method of each use. Products that are in close contact with human body, such as electric shavers and hair dryers, should be used for as short a time as possible. When switching the power supply, try to stay away from your body, and the hair dryer should be perpendicular to your head. Otherwise, after a long time, it is easy to get dizzy.
Vacuum cleaners and humidifiers should be kept away from the body when used. Experiments show that when the distance between the vacuum cleaner and the humidifier is more than 70cm and 1m, the radiation amount is the smallest.
If the electric blanket is used close to the body for a long time, it will cause symptoms such as fatigue and limb pain, especially for pregnant women and children. When using, it is best to turn off the power supply after preheating, and then go to sleep. It is best to heat the electric iron once and then continue to heat it later. Never iron clothes while heating.
2. Intermediate frequency household appliances (below 3 MHz)
Television and computer: the power frequency of television ranges from several hundred Hz to several thousand Hz, while the power frequency of computers, especially desktop computers, is relatively high. (1 MHz = 1 MHz)
Safety tip: stay as far away as possible.
The back and side of the desktop computer host radiate heavily, so it is best not to open the chassis for use. The radiation of notebook computer is concentrated above the keyboard, so it is better to use an external keyboard.
Although the radiation of LCD TV and plasma TV is much smaller than that of traditional old TV, there are still some hidden dangers. It is recommended to keep at least one meter away from TV when watching TV.
Safe distance: In fact, as long as you keep a distance of at least half a meter from these appliances and their radiation intensity is within a certain standard range, there will be no big problem.
3. Microwave band (30~30000 MHz)
Mobile phone, microwave oven: the frequency of mobile phone is very high, and the radiation intensity is also very high. The working frequency is 1800~2000 MHz. The power frequency of microwave oven is between 9 15~2450 MHz, and the radiation is large.
When using a mobile phone, try to make a long story short, and then answer the phone after you connect. It is recommended to use headphones more.
The microwave radiation of the microwave oven will disturb the central nervous system, causing headache, dizziness, memory loss, insomnia and so on. Therefore, when using, the human body must be half a meter away from it, and the eyes can't look straight. At the same time, attention should be paid to cleaning the stove.
4. Simple radiation protection methods
Suggestion: to deal with computer radiation, you can put a bottle of water next to the computer, because water is the best medium to absorb electromagnetic waves.
Note: Metal spectacle frames will obviously enhance the electromagnetic field and increase the radiation absorption rate of users. If you wear metal-rimmed glasses for a long time to make a cell phone call, the radiation of electromagnetic field may spread to the brain and around the eyes through the metal-rimmed glasses, causing harm.
Tips for reducing radiation:
Household appliances should not be put together, let alone used at the same time; Don't use electrical appliances, be sure to turn off the power supply, because charged electrical appliances will still produce a lot of electromagnetic radiation; After watching computer and TV for a long time, wash your face and hands in time; Eat more foods rich in vitamins A, C and protein, such as carrots, cabbage, tofu, milk and eggs. , especially kelp, can strengthen the ability to resist electromagnetic radiation; Drinking more tea water, tea polyphenols and other substances in tea are beneficial to radiation protection.