All objects in nature always transfer heat to the outside world in the form of electromagnetic waves as long as the temperature is above absolute zero. This way of transmitting energy is called radiation.
Radiation is everywhere!
Household appliances: TV, refrigerator, air conditioner, microwave oven, vacuum cleaner, computer, etc.
Office equipment: mobile phones, computers, photocopiers, electronic instruments, medical equipment, etc.
Home improvement: marble, composite floor, wall wallpaper, paint, etc.
Surrounding environment: nuclear radiation from TV (broadcast) signal transmission tower, etc.
Natural environment: sunspots, etc.
The human body has the ability to resist radiation within a certain range. Nevertheless, for the sake of health, it is necessary to strengthen prevention, for example, don't disassemble the chassis shell at will, keep the chassis as far away from yourself as possible, or use the radiation-proof chassis cover for a certain degree of isolation.