Is it harmful to watch TV
Mar 16, 2018
- Is there radiation from the LCD TV
- What is the radiation from the LED TV
- Radiation from the plasma TV
- Radiation from the TV tower
- What harm from the TV and how to minimize it
The use of new appliances introduces comfort, convenience and variety to our lives. Transmission of a long time in front of the TV for many has become a habit, creating the illusion of rest. But is this habit harmless, is the radiation coming from the TV?
Cumbersome, awkward devices with a cathode-ray tube are gradually becoming the property of history, and with it the X-ray radiation that this generation of home television screens has sinned. Now our hearing is pleased with such names as liquid crystal, plasma and led TV.
Is there a radiation from the LCD TV
? In LCD TVs there is no main source of radiation - a cathode-ray tube. They have a different working principle, in which the image is created by special lighting elements. At the same time, the monitor maintains a voltage of only 5 watts.
Control sources, converters, conductors can serve as a source of radiation here. However, considering that the current flowing through them is only one milliampere, and all potentially dangerous nodes are shielded, the radiation from the LCD TV is about 4 times weaker than from its predecessors. The listed elements are located in the back of the monitor. Consequently, electromagnetic radiation can emanate from there as well.
The best protection against the radiation of the TV is its remoteness. To determine the safe distance, the diagonal of the screen should be multiplied by 5.
What is the radiation from the LED TV
A new modification of the LCD TV is the device, called LED.In them, the lamp illumination is replaced by LEDs, which are not sources of additional harmful effects. Therefore, the radiation of LED TVs does not exceed the radiation level of their LC counterparts.
An important advantage is their greater environmental friendliness than conventional LCD TVs. The LEDs do not use mercury, which is a component of filling fluorescent lamps used for backlighting in LCD TVs.
Radiation from the plasma TV
In the models of plasma TVs, the layer of liquid crystals is replaced by tiny cells filled with an inert gas. The discharge of a powerful power supply generates ultraviolet and visible radiation. The ultraviolet is delayed by the glass, and the visible spectrum gives us a picture, which we see on the screen.
Electromagnetic radiation from a plasma TV does not have a harmful effect on the viewer. But electronic noise caused by the passage and switching of current, can interfere with the operation of radio receivers and remote controls.
The power supply for the 42-inch plasma monitor is 350 watts. Therefore, its operation is accompanied by considerable heating. Discomfort from heat radiation is especially great in the summer. Manufacturers are forced to install a variety of cooling systems. Therefore, when working plasma devices can hear an outside noise. But gradually the transition to fanless cooling is carried out.
On sale appeared protective filters that allow to neutralize harmful part of electromagnetic radiation from plasma TVs.
For many decades of its development, our faithful home friends - television receivers, have undergone significant changes in the principle of work. If someone's minds excite the question of whether the TV emits radiation, you can definitely give a negative answer.Neither old models with CRTs, nor more modern ones - plasma and LCD TVs - are sources of radioactive radiation.
Radiation from TV tower
Television, which is a brilliant gift to mankind, at the same time brought him a lot of extra worries. One of them is the radiation of a television tower, which has a negative effect on human health. Therefore, the sanitary services pay close attention to the location of these facilities.
The towers must not be within the city limits. The nearest housing should be located at a distance of at least 500 meters. Unfavorable electromagnetic radiation covering houses within a radius of 200 meters is fraught not only with the rapid fatigue of its inhabitants, but also with a violation of the logic of thinking, memory loss, cancer and other serious health disorders.
Since the maximum radiation of these aerial-mast structures falls on the upper part of the TV tower, high-altitude structures should not be located in the danger zone.
What harm from the TV and how to minimize it
Having received an answer to the question what kind of radiation from TVs of different types, we will discuss whether it is harmful, in general, to watch TV.
In the environment of thinking and advanced people appeared many adherents of refusal to watch TV programs. There are a lot of reasons for this. An important place among them is taking care of spiritual and physical health. Telemania rivets people to the blue screen, overfilling with redundant, often unnecessary information. The flow of scenes of violence and low emotions immerses viewers into a state of stress, and viewing annoying ads - causes feelings of inferiority of one's own life. A multi-hour seat in front of the screen, increases the risk of heart disease, promotes obesity and the development of diabetes.
All of the above should not be considered as a call to a complete refusal to watch TV programs. But the culture of communication with the TV must be present.
- It is necessary to learn how to carefully choose the subject and scope of watching TV programs. Given that the maximum time for an adult should not exceed 4 hours, and for a child - 2 hours.
- Anticipating an interesting transmission, it is convenient to sit directly in front of the screen, and turn on the light. In this case, the distance to the TV should correspond to its diagonal. In a small screen it is best to look from a distance of 1.2 to 2.2 meters. The device with a diagonal of 32 "is recommended to be installed at a distance of 2.5-5.3 meters to the viewing point.
- You should try not to hold your breath and do not fix the sight at one point of the screen even with the most exciting plot.
- To avoid dry eyes, blink frequently.
With such simple truths, your communication with the TV will be truly useful and safe.