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Today, family life has become electrical and the impact of electromagnetic radiation on human health has also become a topic of concern. Long-term and excessive electromagnetic radiation can cause harm to the human reproductive, nervous and immune systems, and is the main cause of skin diseases, cardiovascular diseases, diabetes, and cancerous mutations.
Most people's fear of radiation stems from the lack of a real understanding of it, and takes it for granted that any radiation must be harmful to the body, causing many unnecessary panic and annoyances.
First of all, let us first understand the national safety radiation standards.
1. The public irradiates, within 24 hours a day, the average value of the field quantity parameter of environmental electromagnetic radiation within any 6 consecutive minutes should satisfy the power density < 0.4 W/m2 (frequency is 30 ~ 3000 MHz).
2. Occupational exposure. The average value of the electromagnetic radiation power density (for 6 consecutive minutes) should be <2 W/m2 (frequency is 30 to 3000 MHz) during the 8-hour working hours of the day.
3. The exemption requirements for electromagnetic radiation sources are: mobile radio communication equipment with an output power equal to or less than 15W. When the frequency is 3-300000 MHz, the equivalent radiation power of the electromagnetic radiator is less than 100W.
So, what are the commonly used home appliances radiation?
How can they be used safely?
The following is a summary of the electrical radiation classification by the Beijing Morning Post.
1, ultra-low frequency appliances (rated at 50 Hz)
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Electric shavers, vacuum cleaners, washing machines, electric irons, coffee machines, humidifiers, hair dryers, air conditioners, rice cookers, induction cookers, stirrers, electric blankets, fluorescent lamps, refrigerators, etc.
Under normal circumstances, these appliances will not pose a great threat to the human body, but if you do not pay attention to the frequency of control use, time and use of each use, it will still lead to a series of health problems.
Among them, electric shavers, hair dryers, etc., which are in close contact with the human body and are often used, are used as soon as possible, and should be kept as far away from the body as possible when the power is turned on and off.
Experiments have shown that the distance to the vacuum cleaner is 70 cm or more and the humidifier is 1 meter or more. The amount of radiation is the minimum; and the electric blanket has a long time to wear, which can cause fatigue, weakness, limb pain, etc. The power will be disconnected in time.
2, medium frequency appliances
(below 3 MHz, 1 MHz = 1 million Hz)
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TVs, computers;
The frequency of televisions varies from a few hundred to a few kilohertz, while computers are relatively high, especially desktop computers.
In everyday use, as long as they are kept at a distance of at least half a meter and their radiation intensity is within a certain standard range, there will not be much problem. Desktop computers have large rear and side radiation, and it is best not to open the chassis; laptop radiation is concentrated on the top of the keyboard; flat-panel TVs (including LCD and plasma TVs) are much smaller than traditional CRT TVs, but there are still certain Hidden danger, it is recommended to watch at least one meter away.
3, microwave frequency band (30 to 30000 MHz)
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Mobile phones, microwave ovens
The operating frequency of the microwave oven is between 915 and 2450 MHz, and the working frequency of the mobile phone reaches 1800 to 2000 MHz.
When using the mobile phone, it should be as short as possible. When the phone is connected, it should be answered again. It is recommended to use the headset more frequently. The microwave radiation of the microwave oven will disturb the central nervous system and cause headaches, dizziness, memory loss, insomnia, etc. When used, the human body must Half a meter away, do not look directly at your eyes.
Reduced radiation tips
1 Household appliances should not be placed together, and they should not be used at the same time.
2 If you do not use electrical appliances, be sure to turn off the power supply, because the standby electrical appliances can still produce large amounts of electromagnetic radiation.
3 After washing the computer and TV for a long time, wash your face and wash your hands promptly;
4 Eat more foods rich in vitamins A, C and protein, such as carrots, cabbage, tofu, milk, eggs, etc., especially kelp, can enhance the resistance to electromagnetic radiation;
5 drink more tea, tea polyphenols and other substances are also conducive to radiation protection.
AC (Alternating Current) Power cord is to transmit high voltage. It is used to drive machinery or home appliances. Since AC Power Cord is output of high voltage electric power, there is a risk of electric shock injury, therefore, All the AC power cord must comply with safety standard to produce. DC (direct Current) power cord is used to the applicance with lower voltage mostly, so safety requirement is less stringent.
Power Cable, battery cable, DC power cable, AC power cable, power cord
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