Electromagnetic radiation is ubiquitous in nature, such as energy-saving lamps, televisions, computers and microwave ovens. However, few people pay attention to the electromagnetic radiation in family life. People panic about the radiation of mobile communication base stations, mainly because of misunderstanding: all electromagnetic radiation is harmful. In fact, most electromagnetic radiation is harmless to human body. The key is to control electromagnetic radiation within a safe range. In terms of radiation standards for communication base stations, the standards of the United States and Japan are 600 microwatts per square centimeter, the standards of the European Union are 450 microwatts per square centimeter, and the upper limit of 40 microwatts per square centimeter in China is the most stringent in the world. In other words, the upper radiation limit of the base station is less than one tenth of that of the induction furnace, far lower than that of most household appliances.
It is considered that electromagnetic radiation can be avoided without building a base station. Many people think that there is almost no problem with cell phone signals. As long as you don't build a base station near your home, it won't radiate. But in fact, the worse the signal, the greater the power the mobile phone emits when talking away from the base station; On the contrary, when "full grid" is displayed, the transmission power of the mobile phone is very low. In other words, the more mobile communication base stations, the higher the density of base stations and the smaller the power transmitted by base stations. The closer to the base station, the lower the energy emitted by the mobile phone, which in turn reduces the influence of electromagnetic radiation such as the mobile phone on people.
The idea is that electromagnetic radiation can pass through buildings and enter homes. In fact, the electromagnetic wave emitted by the base station will decay rapidly when it propagates. When the electromagnetic wave passes through the reinforced concrete slab, its residual strength can be ignored. For example, the telephone at home is sometimes intermittent and unclear, because the surrounding trees, walls, glass and other objects block the spread of electromagnetic waves. Therefore, electromagnetic radiation has little influence on human body and surrounding environment.