Why do you see many fingers when your hand dangles in front of a computer screen

One: The computer screen is scanned dozens of times per second, rather than an absolutely continuous display of the picture, so that you see the extra finger shadows, each shadow represents the moment when your finger is swiped by the computer screen, the faster you draw, the longer the interval between the finger shadows, and how many shadows are how many times your fingers are scanned on the computer screen at the moment of swiping. Second, the human eye has a short-term image retention function, maybe a few tenths of a second, and several finger images of the first few tenths of a second are saved in your mind, so that you feel like you are seeing a row of fingers.

Finished ......Mobile phone typing is more tiring,

I think it has something to do with the flickering of the computer screen itself.

Usually you don't feel it when you just look at the computer screen, but it's more obvious when you have a hand in front of you to make a comparison.

Because in the past, when selling eye-protecting table lamps, the salesperson would give you such an experiment to prove that the light of the table lamp was stable.

He would take a spinning top-like thing drawn on a card in several colors and spin it under the lamp.

If it is under the eye protection lamp, the light is stable, and what we see will be a mixed-color spinning top.

If it is under a normal desk lamp, the light is flashing (imperceptible to the naked eye), and when the spinning top rotates underneath, you will see the effect similar to that of a finger in front of a computer screen.

So I think if you turn the computer strobe lower, the effect you're talking about should be more pronounced.

Visual persistence. When the human eye observes the scene, the light signal transmits to the brain nerves, and it takes a short period of time to pass through the end of the action of light, the visual image does not disappear immediately, this residual vision is called "posterior image", and this phenomenon of vision is called "visual retention". You don't have to be in front of a computer screen, you can do anything.

In addition, the fan blades, the spokes of the car tires, and the golden hoop rod of the monkey will look like a lot when they rotate, which is also the principle. You look at the Pleasant Goat and the gray wolf, or this principle.

Hehe, this question is more troublesome than the one [holding the lit incense painting circle] You can search for it.

And if you keep your eyes on one of the fingers when you're shaking it, and you follow it, you won't see ghosting

Because the computer screen is flashing, just like when we have a video camera, it flashes, it's scanning, hehe, people have visual persistence, so that's it.

Ha, yes, it's the same as the [circle with lit incense].

Also, if you don't hang around the computer screen and look elsewhere, there will be ghosting, which has nothing to do with the computer.

Playing with the computer and playing tricks...

Because the monitor is scanning.

Caused by the electrostatic field, people and metals have electrostatic stools laughing at the external electrostatic field causing the internal electric field of the parts to be disordered, which causes the electrons to not be able to hit the screen according to the predetermined track, which causes the book you see to be rough hands in that state.

Because the current used by the computer is alternating current, the screen will flicker, and the human eye has a visual stay, so the situation mentioned by the landlord will occur.

That's caused by the visual stay of the human eye, just like watching animation, in fact, animation is connected one by one, using the illusion of the human eye.

Hello, here it is recommended that you go to the local store to compare the same mobile phone, if the problem is more serious, you can go to the local Meizu authorized service experience center or return to the factory for testing and maintenance.

It's not normal, you try it with screen calibration! If it doesn't work, there is a problem with the touch screen.

It is mostly caused by loose or aging of the screen cable, followed by the aging of the screen itself, and you need professional maintenance personnel to help you try to repair or replace it, and answer your questions about notebook hardware.

This kind of computer screen should be an ordinary color liquid crystal display (LCD). Typically, in a color LCD panel, each pixel is made up of three LCD cells, each of which is preceded by a red, green, or blue filter. The light is processed by the filter and irradiated on the liquid crystal cells of different colors in each pixel, and different colors are combined by the principle of three primary colors.

If you look closely through the magnifying glass, you should see these three colored cells on the screen.

This is a cross-sectional schematic diagram of a normal color liquid crystal display. When you press the computer screen, the distance between the layers in the picture decreases, and the light transmittance of the various colors increases, so that the color appears.

In addition, if you poke vigorously with your fingers or hard objects, you are likely to shatter the fragile glass; It can also break the liquid crystal pixel particles, causing dead pixels. LCD panels are prone to deformation of the polarizer (polarizing filter in the picture) in the LCD panel under the action of external forces. The nature of the polarizer is a bit like aluminum foil or copper foil, once it is deformed, it is difficult to recover, so it will cause the LCD panel to have a difference in reflection and a gray part.

In addition, some people like to press the panel by hand, which is interesting to see the appearance of water lines. This is definitely a very bad habit. Long-term vigorous pressure on the LCD panel will lead to dead pixels and dark spots, which can be permanently damaged and cannot be repaired, and the LCD panel can only be replaced!

When the liquid crystal is pressed and deformed, it has color.

This is a soft LCD screen, and after the hand squeezes, the direction changes due to the pressure of the liquid crystal inside, so the color changes a little, which is normal.

Normal, the screen is not for you to press.

The normal liquid crystal is just like that.

Normal is a common phenomenon of LCD screens.

The LCD display is like this, and it does not affect the use.

The hard screen will not appear, the normal screen is like this, it is normal.

Is the voltage unstable when charging? When it is charging, the charger is counterfeit. If it's usual, it may be sweat stains or water touching, resulting in unstable voltage, the screen will move, you shouldn't have a film, this kind of problem will be much better if you stick the film.

When you mess around, you lock the lower screen, then wipe the screen, unlock it again, and it won't move.

The screen is moving because your hand touches the screen, the screen is a capacitive screen, you won't have this kind of thing with a pencil, just don't touch the screen with your fingers.

Obviously, your phone is relatively high-end and supports floating touch screens.

What is your phone. Some mobile phones with hundreds of dollars will be like this forever. You don't have to do what you do on the screen. It's going to flash around.

This is the normal reaction of every phone, ignore it.

The problem of the touch screen of the screen, you can only change the touch screen, I have had it before, if it is too expensive to change, it is not cost-effective.

The screen is broken, and you need to replace it with a touch screen.

The touch screen of the mobile phone is very sensitive, ask what kind of phone you have.

What kind of mobile phone are you? Apples?