Sources of electromagnetic radiation can be divided into natural and man-made sources of electromagnetic radiation. Lightning, sunspot activity, cosmic rays, etc. produce electromagnetic radiation, which is a natural source of electromagnetic radiation; and man-made sources of electromagnetic radiation are mainly various types of radio equipment, including industrial, scientific and medical equipment (ISM).
Such as mobile phones, wireless walkie-talkies, indoor wireless phones, radio and television broadcast transmitters, microwave and satellite communication devices, radar, radio remote control and other types of radio equipment, as well as, for example, microwave ovens, high-frequency eye lamps, medical magnetic *** vibration equipment, helium arc welders, radio frequency heaters, high-frequency heaters, high-frequency thermo-combination machines, AC high-voltage power transmission lines, transfer switches, motors, generators, TV sets, computers, etc. are electromagnetic radiation.
Radiation is invisible, odorless, colorless, can penetrate a variety of substances, including the human body. A variety of household appliances, electronic equipment, office automation equipment, mobile communications equipment, signal transmitting equipment and other devices, as long as the operation of the use of the state, there will be radiation around it. People who work, study and live in an environment where radiation sources are concentrated are prone to insomnia, memory loss, weakness, low immunity, etc., and the growth rate of their cancer cells is twenty-four times faster than that of normal people.
How far is radiation from us In our living environment, radiation is everywhere!
☆ Household appliances: TVs, refrigerators, air conditioners, microwave ovens, vacuum cleaners, etc.
☆ Office equipment: cell phones, computers, photocopiers, electronic instruments, medical equipment, etc.
☆ Home decoration: marble, laminate flooring, wallpaper, paint, etc.
☆ Peripheral environment: high-voltage lines, power substations, TV (radio) signal towers, etc.
☆ The radiation in our living environment is everywhere.