Is The Radiation of Communication Base Stations Harmful To Health?
What exactly is electromagnetic radiation?
——Electromagnetic radiation cannot be avoided in modern life, but you don't have to worry, only if the thermal effect is caused by exceeding the limit, it will be harmful to health
Radiation is divided into two categories: ionizing radiation and non-ionizing radiation. Ionizing radiation refers to the general term for the radiation that ionizes the affected substances, such as alpha particles, neutrons, X-rays, etc. Ionizing radiation is divided into natural radiation and artificial radiation. Among them, artificial radiation includes medical X-rays, radioactive wastes discharged from the nuclear industry, etc. In exposure to ionizing radiation, if the protective measures are improper and the exposure dose exceeds the limit, the human organs may undergo pathological changes.
Non-ionizing radiation refers to radiation with extremely low quantum energy that does not ionize matter, commonly known as electromagnetic radiation. Some residents will worry about the radiation of mobile communication base stations, that is, electromagnetic radiation, that is, the phenomenon that energy propagates through space in the form of electromagnetic waves. The essential difference between electromagnetic radiation and ionizing radiation lies in the huge difference in quantum energy. For example, the quantum energy of X-rays is more than a million times that of electromagnetic radiation in the microwave band. Ionizing radiation can damage the structure of matter, while electromagnetic radiation cannot. To put it simply, ionizing radiation is like shooting an apple with a bullet. The strong kinetic energy of the bullet can penetrate the apple, while electromagnetic radiation is like a ping-pong ball, which will not cause damage to the apple.
And electromagnetic radiation and electromagnetic radiation pollution are two different concepts. Electromagnetic radiation is not mysterious or scary, and it is our inseparable friend in modern life. Modern people are exposed to various electromagnetic radiations from the day they are born. The Earth itself is a large magnetic field that protects us and our living beings from cosmic rays. Both the natural magnetic field and the sun emit electromagnetic radiation of different intensities. In the long-term activities of understanding and transforming nature, human beings discovered and understood electromagnetic waves, and then used electromagnetic waves to improve their lives. Therefore, effectively controlled electromagnetic radiation is not a pollutant, but a resource.
However, when the amount of electromagnetic radiation exceeds a certain limit, electromagnetic radiation pollution is formed. It has been concluded that the human body will have harmful effects when exposed to strong electromagnetic fields. The body's self-heat regulation mechanism cannot dissipate the absorbed heat in time, which will cause the body temperature to rise, and then the thermal effect will occur, affecting the normal operation of the organs. It is currently recognized that thermal effects will occur when the power density is greater than 100,000 microwatts per square centimeter.
Why are base stations often built near cells?
——The building blocks, and the signal is attenuated seriously; to improve the communication quality, it is necessary to increase the density and effectively cover
From the perspective of communication needs, with the development of the mobile Internet, people expect strong mobile phone signals and fast Internet access. However, in the city, due to the blockage of buildings, the signal of the mobile communication base station is seriously attenuated, the indoor signal strength is low, and the network coverage quality is difficult to meet the needs of users. Therefore, in densely populated urban areas, it is necessary to increase the density of base stations and distribute them evenly to achieve effective coverage. A residential area is an area with concentrated users, strong communication demands and serious building blockages. In order to ensure communication quality, base stations must be built in accordance with the planning premise, and sometimes they have to be built in a location closer to the users.
In fact, there are many types of mobile communication base stations. According to the coverage area, they are wide-area macro base stations, cell macro base stations and indoor distribution stations in descending order.
