All objects in nature, as long as the temperature is above absolute zero (-273. 15 degrees Celsius), constantly transfer heat in the form of electromagnetic waves and particles. This way of transmitting energy is called radiation.
Electromagnetic radiation and electromagnetic radiation pollution are two concepts. Any charged body has electromagnetic radiation. When the intensity of electromagnetic radiation exceeds the national standard, it will have negative effects and cause different diseases and harms to the human body. This part of radiation that exceeds the standard electromagnetic field strength is called electromagnetic radiation pollution.
Expand the data and avoid nearby radiation sources.
China's "Regulations on the Protection of Power Facilities" only stipulates the protection zone of overhead power lines, and there is no environmental protection technical requirement for the design of substations. Some EIA reports suggest that the working area of substation (main control building, main transformer, 1 10KW distribution room) should extend 20 meters as the electromagnetic radiation safety protection zone.
Because there are a lot of ions in children's bodies, the absorption rate of mobile phone radiation may be higher. In the long run, children will be exposed for longer than adults. Parents are advised not to let their children play with mobile phones, only use mobile phones for short and necessary communication, use hands-free or headphones, and keep the distance between mobile phones and their heads above 2.54 cm.
The Danish National Birth Cohort (DNBC) published three related studies. The first two studies found that using mobile phones during pregnancy is related to children's behavioral difficulties during school, such as emotional problems and ADHD. The third study did not find that children were stunted within 18 months after birth. So this problem needs more experiments to prove, but it is always right to use less.
The electromagnetic field that most people are exposed to every day comes from household appliances with motors, transformers or heaters. The intensity of magnetic field decreases rapidly with the increase of distance, so increasing the distance between people and electrical appliances and limiting contact time are the best ways to reduce radiation.
Baidu encyclopedia-radiation
People's Network-Avoid radiation sources around you