TV: Few negative oxygen ions will cause discomfort
When watching TV, it is not advisable to get too close. If you get too close, it will not only hurt your eyes. When the TV's picture tube is activated, its negative electrode will emit high-energy electron beams. When these electron beams violently hit the fluorescent material on the inner wall of the screen, an image will be displayed on the screen, but this will also produce penetrating X-radiation.
It is best to have a time limit for watching TV. If you are watching for a longer period of time, remember to leave the scene at least once every hour. The seat should be at least two meters away from the TV, and it is best to install a protective screen. When the TV screen displays images, it will also emit a large number of positive ions. They absorb negative oxygen ions in the surrounding air like magnets, making the indoor air more polluted. The negative oxygen ions are greatly reduced. People who are in a state of lacking negative oxygen ions for a long time are prone to headaches, chest tightness and loss of appetite. People who watch TV for a long time should also pay attention to the circulation of indoor air.