What are the white particles inside the processor of an iPhone?

There is a white dot on the iPhone screen, which can be any of the following:1. This is a watermark because the LCD assembly of 6 and 6 is very thin, when the LCD and the touch screen are pressed, the space between the face and the touch screen is very small, and the white point is the contact point between the LCD and the touch screen, so the white point is not visible in the black, because it is one, the white point contact point will be more prominent, and it is a normal phenomenon to use without influence2.

Probably a trap. Here's how it works: Turn on your iPhone, go to the home screen, select Settings to go to the settings screen, select General to go to the general screen, select Secondary to enter the secondary screen, select "Assistive Touch" to enter the secondary touch, select "Enable Assistive Touch" to turn on, and the screen appears immediately3.

It could be a screen issue. Probably not a good place. Try it with the next screen tester.

It is also possible to remove the three primary colors.

Because all mobile phones, computers, TVs, and screens are composed of three primary colors, if there are no three primary colors, and black and white, there are white spots, that is, the three primary colors fall off. If you haven't bought it for a long time, you can return it if there is a problem with the quality. And also:

What's going on with the white dot on the iPhone screen. [Reference time: 2018-1-9].

It may be heat dissipation grease.

The so-called "little dot" of the iPhone is actually the AssistiveTouch of the iPhone system. The setup tutorial is as follows:

The assistivetouch function in the iPhone is designed to make it more convenient and faster for users to use the iPhone. Such as taking screenshots, customizing gestures.

Enter the interface of your phone and open "Settings".

Find "General" in "Settings".

Find "Accessibility" under "General".

Find "assistivetouch" in "Accessibility".

Click "AssistiveTouch" to turn on AssistiveTouch.

When you turn on "AssistiveTouch", a small square will appear on the desktop.

After the iPhone system's AssistiveTouch is set, you don't need the home button to achieve the following 4 functions!

Tap directly once to return to the Home screen from all interfaces.

Click the small white dot twice in a row to bring up the background task manager.

Double-tap the small white dot to lock the screen.

Use the power button and the small white dot combination to take a screenshot!

It may be a "wax bag", but all apples can be scraped off, even if you pick wild fruits from the mountains, the white powder is a substance on the surface of the fruit, which comes from the fruit itself and not from the later man-made .

Apples themselves will produce a natural fruit wax, most of the apples sold on the market now will produce natural fruit wax, the white powder that everyone can scrape out, is a natural lipid component, that is, commonly known as natural fruit wax, which does not have any harm to the human body. "Waxing is generally found on some high-end or imported fruits that need to be transported over long distances. Su Xiaodong said that the main purpose of waxing the fruit is to keep the skin from dehydration for a long time.

At present, there are basically no waxed apples sold in the market. Because when the apple is fully ripe, the skin itself produces fruit wax, which is a membrane produced by the apple for self-protection. The thicker the skin, the more wax there is, which can be scraped off with a knife, "The original production of high-quality apples requires waxing, but now most of the apples are bagged when they grow, so there is no need for waxing." ”

This is the wax on the peel, and there are three main cases of wax on the peel:

The surface of the apple itself has a layer of fruit wax, which is a lipid component, which is a plant protective layer generated on the surface of the apple, which can effectively prevent external microorganisms and pesticides from invading the pulp and play a protective role;

Some high-grade apples with wax on it, is artificially added to the edible wax, this "artificial wax" is actually a kind of chitosan substance, mostly extracted from crabs, shells and other crustaceans, this substance itself is not harmless to the body, its role is mainly used to keep fresh, to prevent apples from rotting and deteriorating in long-distance transportation and long-term storage. To remove this layer of wax is also very simple, rinse directly with hot water to remove this layer of artificial wax on the surface of the apple.

People are worried about the third type of wax - unscrupulous vendors use industrial wax to wax fruits, which contains mercury and lead that may penetrate into the pulp through the peel and bring harm to the human body. Therefore, when choosing waxed fruits, you can wipe the surface of the fruit with your hands or napkins, if you can wipe off a layer of light red, do not buy it, this is likely to be industrial wax.

My mother-in-law's family grows apples.

The situation you said may be set of wax bags, but all apples can be scraped off, even if you pick wild fruits (apples) from the mountains, I did this experiment, white powder is a substance on the surface of the fruit, from the fruit itself, not later artificial (not professional, can only say so much, what is certain is that wax is available in the apple industry).

It is a fruit wax that gives the apple a fresh, shiny look.

There are two possibilities, one is fruit powder, which is harmless to people; The second is artificially applied preservatives, which are harmful to people.

Wax, because it is a protective film, makes apples look fresher.

The white stuff on the CPU is thermal grease.

1. Introduction to thermal grease: commonly known as heat dissipation paste, it is a paste made of special silicone oil as the base oil, new metal oxide as filler, with a variety of functional additives, and processed by a specific process. Colors have different appearances depending on the material.

It has good thermal conductivity, temperature resistance and insulation properties, and is an ideal dielectric material for heat-resistant devices, and its performance is stable, and it will not produce corrosive gas in use and will not affect the metal it comes into contact with. Thermal grease is a highly thermally conductive insulating silicone material that almost never cures and can remain in the same condition as a grease for a long time at temperatures ranging from -50 to +230. It has excellent electrical insulation, excellent thermal conductivity, low freeness (tends to zero), high and low temperature resistance, water resistance, ozone resistance, and weather aging resistance.

It can be widely coated in various electronic products, electrical equipment between the heating element (power tube, thyristor, electric pile, etc.) and heat dissipation facilities (heat sink, heat sink, housing, etc.), playing the role of heat transfer medium and moisture-proof, dust-proof, corrosion-proof, shockproof and other properties.

2. The role of silicone grease: it is to fill the gap between the heat sink and the chip, take the CPU and its heat sink that we are familiar with, in fact, our seemingly smooth surface is actually in the micro state is ravines and vertical and horizontal, the surface of the CPU we can see a lot of grinding marks with the naked eye, and as a heat sink, everyone's benefit can not escape the fate of potholes. The evenly applied silicone grease with the right thickness can fill these holes well, make them more closely contacted, increase the heat dissipation area, and improve the heat dissipation effect.

The thermal conductivity effect of the silicone grease itself also determines the final actual use effect.

3. The application of silicone grease: in fact, it is not difficult, the focus is on two words, "even" and "thin". Here is a misconception to correct that silicone grease is not good if it is thick, but it is good when it is thin.

4. How to choose silicone grease.

First of all, it is very important, that is, to distinguish the difference between industrial silicone grease and the heat dissipation grease we use, the lump in the picture above is not deliberately made to disgust everyone, it is a typical industrial silicone grease, the white color is not pure, and it looks rough. A good silicone grease, if it is white, it should be white, not too thin and feel like some cosmetic emulsion, and not too thick, you can't push it with a card or something. If you feel a noticeable bump in your hand, you can't use it on your computer.

Silicone grease according to the ** different, its performance will also produce a lot of differences, expensive is good. Choose a product whose performance is not bad,** acceptable. When purchasing, you must mainly compare the thermal conductivity, heat transfer coefficient, and thermal resistance coefficient, which largely determine the actual use effect of a silicone grease.

The white powder scraped off the skin of the apples we eat is actually wax.

The white powder scraped off the skin of the apple is wax, so you can wash it when you eat it.

Many friends usually eat apples, if not washed, then it is easy to scrape off a layer of white substance from the surface of the apple, do not understand the friend scrape off this layer of white substance after thinking that it is a toxin, or think that this is a black-hearted fruit farmer sprayed on the pesticide residue, in fact, do not misunderstand.

In fact, as most netizens worry about on the Internet, these white powders are really wax, but the worries of netizens are actually somewhat filtered, because these waxes are edible waxes sprayed by fruit farmers, as long as they are cleaned, they will not worry at all, even if they are not cleaned, they are edible.

In China's health standards for the use of food additives, it is clearly allowed to wax the surface of fresh fruits, and the wax on the surface of fresh fruits is usually used with regular additives, and is added in an appropriate amount according to production needs.

This kind of edible wax, generally extracted from crabs and shells, is non-toxic, tasteless, non-polluting and non-*** edible wax, the purpose of these edible waxes is to prevent these fresh fruits from rotting and deteriorating, so as to retain the best taste of apples and other fruits for everyone, as long as you pay attention to clean it before eating, there is no problem. At the same time, there is also the possibility that the nutrients and moisture of the apple itself will also leave a layer of natural fruit wax on the peel during the volatilization process.

After such an explanation, you may be relaxed about the edible wax on the surface of this apple, thinking that the apple is fine if it is not washed, but here I still want to remind you that in today's society, there are many black-hearted manufacturers in order to save costs, using some industrial wax that is much cheaper than edible wax, these industrial waxes look similar to edible wax, but after eating, the harm to the human body is not small, and what is more terrible is that he will also seep into the pulp, causing a lot of damage to the human body.

In general, the fruit wax is only a thin layer, and if the industrial wax is wiped with a paper towel, there may be red traces, but because the means of black-hearted merchants are becoming more and more sophisticated, we sometimes can't distinguish them in this traditional way, so it is recommended that you peel the apple before eating it.

The white substance on the skin of the apple is a substance secreted by the apple itself, and the scientific name is fruit wax.

The white powder is fruit wax, natural and artificial fruit wax is harmless to the human body, but there are also industrial fruit waxes added by illegal merchants that are harmful to the human body.

The white powder that can be scraped off the surface of apples is edible wax.

The white powder scraped off the skin of the apple may be something that we can't see on the surface.

Every time I eat an apple, I eat it with the peel attached to it, and I don't pay attention.

There are white dots in the screen of the iPhone, which may have the following situations:

This is a watermark, because the LCD assembly design of 6 and 6plus is very thin, so when the LCD and touch are pressed, the gap between the surface and the touch screen is very small, and the white spot is the contact between the LCD surface and the touch screen surface, so the white point can not be seen when it is black, because it is one, the contact point will be more prominent in the case of white, and it does not affect the normal phenomenon of the subordinate.

There may be a setup issue, the steps are as follows:

Turn on your iPhone, enter the home screen interface, select "Settings" to enter the settings interface, select "General" to enter the general interface, select "Accessibility" to enter the accessibility interface, select "Assistive Touch" to enter Assistive Touch, select "Turn on Assistive Touch" to turn on, and the screen will appear immediately.

It could also be a screen issue, it could be a dead pixel, take a look at the next screen tester test. It may also be that the three primary colors are off, because all mobile phones, computers, TVs, and screens are composed of three primary colors, if there are no three primary colors, it is the same as black and white, there are white spots, and the three primary colors are off. If you have just bought it for a short time, it is a quality problem and you can return it.

All mobile phones, computers, TVs, and screens are composed of three primary colors, if there are no three primary colors, it is the same as black and white, there are white spots, which are three primary colors, and they are dropped.

If the cable is broken, the cable connecting the screen and the motherboard is burned or loosened, so it's good to change the cable.

The screen is broken, and the LCD screen is broken, this kind of no way, the most troublesome, to replace the entire screen assembly, the cost is very high.

If the motherboard is broken, it is also to replace the entire motherboard, but this probability is relatively small, but it is not ruled out, the way is to replace the motherboard, and the motherboard is generally cheaper than the screen.

There will still be problems after a long time.