The difference between electromagnetic radiation and ionizing radiation:
One, the method of generation is different:
1, ionizing radiation is to make the electrons in the atoms or molecules of a substance become free state, so that these atoms or molecules undergo the phenomenon of ionization of the energy of the radiation.
2. Electromagnetic radiation is produced by the movement of electric charge.
2, the harm to people:
1, some electromagnetic radiation has a certain effect on the human body.
2, October 27, 2017, the World Health Organization's International Agency for Research on Cancer published a preliminary collation of the list of carcinogens reference, ionizing radiation (all types) in the list of class I carcinogens.
Expanded Information:
. p>Principles of protection:
1, time protection:
No matter what kind of irradiation, the size of the cumulative dose of the human body irradiated is directly proportional to the time of irradiation. The longer the exposure time, the more serious the radiation hazard. Try to shorten the time engaged in radioactive work, in order to achieve the purpose of reducing the dose of exposure.
2, distance protection:
Radiation dose rate at a certain place is inversely proportional to the square of the distance from the radioactive source, the greater the distance from the radioactive source, the smaller the dose rate at that place. So try to work away from the radioactive source. To achieve the purpose of protection.
3, shielding protection:
It is to set up a protective barrier between people and radioactive sources. Because the ray through the atomic number of material, will be absorbed a lot, so that reach the human body part of the radiation dose is weakened. Commonly used shielding materials are lead, reinforced concrete, lead glass and so on.
Baidu Encyclopedia- ? Electromagnetic radiation
Baidu Encyclopedia- Ionizing radiation