Nowadays, having a computer in your home is almost an absolute necessity. In this regard, there is such a problem as deteriorating health. Of course, it is not easy or quick to completely eradicate this problem. But to fight it right now is not only possible, but also necessary.
It is necessary
Before choosing a particular monitor, learn more about its properties
Instructions
Step 1
CRT - monitor or the first generation of monitors.
A cathode-ray tube monitor works on the basis of a kinescope. A picture tube is an electronic device that converts electrical signals into a visible image. Simply put, we see the image on a CRT monitor using a special tube. Light passes through this tube, then it hits a reflective surface, and then displays an image.
These monitors are large, heavy, and consume a lot of power. And also, they negatively affect vision by means of electromagnetic radiation. Which spreads behind and on the sides of the monitor at a distance of 1.5 m. During use, a phenomenon such as "flickering" often occurs, which contributes to a decrease in visual acuity. These monitors are now out of production, but you can buy used ones. And although you will spend about $ 50, such a monitor will be very harmful to your health.
Step 2
LED - monitor.
These monitors use LEDs instead of electric lamps. They are the main principle of operation of this monitor. These are such small lights, thanks to which we see the image on the screen. The LED produces crystal white and black colors for enhanced contrast, clarity and brightness. The colors seem more natural to a person, thereby increasing his attention.
These monitors consume almost 50% less power than CRTs. Their price is also attractive - from $ 100. They are convenient to use, do not take up much space and practically do not impair vision. No mercury is used in production, which is an environmentally friendly factor.
Step 3
LCD monitor.
Liquid crystal screens are made on the basis of the substance cyanophenyl, which is in a liquid state, but retains the properties of crystals, hence the name. Today these are the most up-to-date monitors.
Such monitors work on the basis of liquid crystals. When a signal is given, they alternately light up on the screen, thereby giving out an image.
The cost depends on the diagonal, but on average from $ 80. Due to its simple structure, absence of electromagnetic radiation and reasonable price, the LCD monitor conquered the whole world.
Step 4
It turns out that an LCD monitor is the safest type of monitor. But, unfortunately, even with it, you can spoil your eyesight if you do not follow the rules for working at a computer:
- the monitor must be installed at a distance of at least 50 cm from yourself, at eye level;
- in addition to the main lighting, resort to additional;
- avoid reflections and glare;
- every hour of working at the computer, distract by 15 minutes to do exercises for the eyes.
