Mechanical medical equipment has radiation.

When the computer is in use, the display screen will emit electromagnetic and ionizing radiation. Often working in front of the computer will make human skin aging, cause rough skin, and even cause skin inflammation and other diseases. To prevent computer radiation, we should start from the following aspects: when purchasing computers, try to buy new health-care green computers, and generally do not use old computers. The radiation dose of the old computer is large, which is generally 1-2 times that of the new computer at the same distance and similar model. When operating a computer, it is best to install a computer-specific color filter on the display screen to reduce the harm of radiation, and do not place miscellaneous metal objects indoors to avoid electromagnetic waves from being emitted again. When using a computer, you need to adjust the brightness of the screen. Generally speaking, the brighter the screen, the stronger the electromagnetic radiation, and vice versa. But it can't be too dark, so as not to affect the viewing effect because the brightness is too small, which is easy to cause eye fatigue. When operating the computer, pay attention to keep a proper distance from the screen. The closer you are to the screen, the greater the electromagnetic radiation the human body receives, so it is best to be 0.5M away from the screen. In addition, after operating the computer, many particles of electromagnetic radiation will be absorbed into the face. Washing your face with clean water in time will reduce radiation exposure by more than 70%.