Ionization means that electrons are knocked out of the electron shell by ionizing radiation, making atoms positively charged. Because cells are made of atoms, ionization can cause cancer. A cell is composed of trillions of atoms, and the probability of cancer caused by ionizing radiation depends on the radiation dose rate and the sensitivity of irradiated organisms.
Satellite earth communication stations, large power stations, power transmission and transformation equipment, high-voltage and ultra-high-voltage transmission lines, subway trains and electric trains, and most household appliances are all electromagnetic radiation sources that can generate various forms, different frequencies and different intensities.
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Main sources and effects of radiation:
1. Electromagnetic waves move in the form of waves through electric and magnetic fields that oscillate in the same phase and are perpendicular to each other, and their propagation direction is perpendicular to the plane formed by the electric and magnetic fields, effectively transferring energy and momentum.
2. Radar systems, television, mobile phone and broadcast transmission systems, radio frequency induction and medium heating equipment, radio frequency and microwave medical equipment, various electrical processing equipment, subway trains and electric trains, and most household appliances are all electromagnetic radiation sources that can generate various forms, different frequencies and different intensities.
3、? Electromagnetic radiation fills the space, is colorless, tasteless and intangible, and can penetrate many substances, including the human body. If the human body is exposed to radiation doses exceeding the safe level for a long time, cells will be killed or die in a large area.
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