What are the main types of electromagnetic radiation sources?
The common types of electromagnetic radiation sources in life mainly include the following:
1. Radio and television transmission equipment, mainly for radio and television transmission stations and relay stations in various places.
2. Communication radar and navigation communication launch equipment, including shortwave launch station, microwave communication station, ground satellite communication station, and mobile communication station.
3. Industrial, scientific research, medical high-frequency equipment. This type of equipment converts electrical energy into heat energy or other energy for use, but it is accompanied by electromagnetic radiation and leaks out, causing environmental pollution in the workplace.
Industrial electromagnetic radiation equipment: mainly high-frequency furnaces, plastic heat sealing machines, high-frequency dielectric heating machines, etc.
Medical electromagnetic radiation equipment: mainly high-frequency physiotherapy machines, ultra-short wave physiotherapy machines, ultraviolet physiotherapy machines, etc.
Electromagnetic radiation equipment for scientific research: mainly electron accelerators, various ultrasonic devices, electromagnetic cookers, etc.
4.
Electromagnetic radiation equipment for transportation systems, including: electrified railways, light rails and electrified railways, trams, trolleybuses, etc.
5. Electromagnetic radiation equipment for power systems, high-voltage transmission lines include overhead transmission lines and underground cables, and substations include power plants and transformer power stations.
6. Electromagnetic radiation equipment of household appliances, including computers, monitors, televisions, microwave ovens, wireless telephones, etc.
