What are the sources of radiation contamination? Online wait ~~~~~~~~ thanks ah

Sources of such pollution include:

(1) Household appliances such as computers, televisions, stereos, microwave ovens, refrigerators, etc.

(2) Communication equipment such as cell phones, fax machines, and telecommunication stations;

(3) High-voltage power lines, as well as electric motors, motor equipment, etc.

(4) Airplanes, electric railroads, etc.

(5) Broadcasting, television transmitters, cell phone transmission base stations, radar systems, etc.;

(6) power industry machine rooms, satellite ground stations, dispatch command centers, etc.;

(7) application of microwave and X-ray and other medical equipment, etc..