What exactly is the "cooling glass" that the old driver said? Really slow down?

[China Glass Network] I don't know if you have ever driven a van. If you drive another vehicle, will there be a feeling of "faster" in the van?

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For example, when the speed reaches 100km/h, the driver of the van and the passenger of the co-pilot can feel the wind, and if it is a car, there is no such feeling. Even if it is 120km/m, it feels very slow. ". Of course, it is not the van that is faster than the car at the actual speed. For this phenomenon, the old driver explained that it is the effect of "slowdown glass".

However, this is not the case. The older generation of drivers said the word "slow-speed glass", probably because they had driven a big truck or a small truck in the early years, and later came into contact with the car, obviously feeling a different speed. Feeling, and I can't explain this phenomenon, so I think that it is a foreigner (when the car is a foreign goods). What technology can be used on the car glass to slow down, the word "slow down glass" was born. In fact, the so-called "reduction glass" is nothing more than safety glass. It is made up of two pieces of high-purity quartz crystal material glass. It can be insulated and soundproofed. Vacuum is applied between two pieces of glass to make the whole glass under stress. There will be no serious breakage. No matter from which aspect, such a glass can not have the function of deceleration. This is against the natural law. It can explain the speed of the van. The reason why the car has a slow speed is only visual error.

This is actually a very simple physics common sense. For example, the average moon moves about one kilometer in one second, but in our eyes it is very slow and almost immobile. That is to say, when viewing objects of the same speed at different positions, there will be very different. The speed, open different cars will also have this situation, take the bus and car we are familiar with, the bus front glass is almost vertical, the driver's seat is high, can be seen very close to the front The pavement, the fleeting road surface will make the driver feel the speed is very fast. On the contrary, the car not only has a long front, but also the front windshield, the seat is relatively low, and a large section of the road is blocked. At the same speed, it seems that there is no bus as fast.

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In addition, the reason that affects people's judgment on the speed of the vehicle is NVH, which refers to noise, vibration and harshness.

For example, when the same car is driving on a poor quality road surface, in addition to the forward movement scene, there are many irregular swayes caused by bumps, and it is difficult for the human eye to capture the vehicle exterior, which will give the brain a kind of " Fast feeling. In the same way, the noise will also have the effect of feeling "fast", so sometimes the high-end car will not feel so fast when it is opened, it is the reason why it is soundproof and smoother. In fact, good glass should be the same as "no glass", the outside scenery can not be deformed, so that people will see better and more comfortable vision.

Therefore, it is hard to relate the glass to the speed. Therefore, this kind of glass can only be called "no speed increase" glass, because the poor quality glass causes the deformation of the scene to be seen, which is also visually fatigued. Give people a feeling of "fast".

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