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Why doesn't the plane appear the "Diamond Princess" in the air?
Apr , 01 2020
The cabin looks very small, does it mean that the aircraft is not easily ventilated and can cause infection? Will the plane even become the "Princess Diamond" in the air? The answer is "NO"! First, the cabin air is replaced every 2 to 3 minutes, and 20 to 30 times per hour. Aircraft ventilation system mainly makes the air flow up and down. This circulation method can effectively reduce the possibi...
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How to distinguish between cold, flu and COVID-19?
Apr , 02 2020
Winter and spring are influenza seasons each year, and the epidemic of new crown virus pneumonia broke out at the junction of the two seasons this year. As everyone knows, the symptoms of the new coronary pneumonia, flu, and common cold have certain similarities. If you accidentally catch the common cold and flu during this period, you will be more worried than usual and wonder if you are infected...
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Can ultraviolet rays kill COVID-19 virus?
Apr , 02 2020
According to foreign media reports, Dan Arnold works for Ultraviolet Technology, a company that provides disinfection equipment to hospitals, pharmaceutical companies and food manufacturers across the UK. With the global novel coronavirus crisis heating up, whether ultraviolet rays can kill novel coronavirus has also become a hot topic. Recently, Arnold received some unusual advice, many people as...
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Will the forehead thermometer radiate? Why should we choose a forehead thermometer?
Apr , 03 2020
Every day when I go in and out of the community, I will be required to take a temperature measurement, commuting work. The most commonly used is a forehead thermometer. Some netizens may be confused. Will there be radiation with the forehead thermometer for measuring body temperature? Why use a forehead thermometer? How to effectively improve the accuracy of temperature measurement? Don't worry, A...
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Is the temperature getting lower? To see if you have applied makeup？
Apr , 14 2020
Cosmetics can not only change the skin infrared temperature measurement value, the error may also be large. Right now, the new coronavirus is ravaging the world, and non-contact infrared thermometers are widely available at the entrances of various public places. As long as you go out, you will inevitably be measured several times a day. Although today's infrared temperature measurement technology...
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What should I do if the disinfectant accidentally splashes into my eyes? It is important to learn this trick
Apr , 14 2020
During the epidemic, disinfection has almost become a daily task for every household. 84 disinfectants, 75% medical alcohol and other disinfectants have also become standing supplies in the home. However, improper use of disinfectants also poses safety risks for some families. Recently, Pan Changjiang posted a video online. In the video, Changjiang Chang came to her daughter's house, but she was s...
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Comparison between quartz clock movement and mechanical movement.
Apr , 28 2020
Quartz clock movement and mechanical movement are two ways of movement, both of which are more common forms of watch movement. Here is a comparative introduction of quartz clock movement and mechanical movement, so that you can choose a suitable watch movement. Quartz movement in the movement is more common, to put it bluntly, it is "simple, anti-manufacturing, accurate and cheap". Here, "simple" ...
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Pirate King's Wooden Clock Blind Box——Special Present
Jun , 03 2020
Are you still worrying about what to buy for your family or friends? Wine? That’s too expensive Shoes? But the moral is not good So here I would like to recommend a universal gift for giving options -- Wooden Clock Blind Box Amazing? And what is the blind box of wood clock? A creative wood clock with a good quality LED screen on the left side, And a surprise on the right side. What surprises are h...
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What is a micro switch?
Aug , 17 2020
A micro switch is a contact mechanism that has a small contact interval and a snap-action mechanism, and uses a specified stroke and a specified force to switch action. It is covered by a shell and has a drive rod outside of it. Because the contact distance of the switch is relatively small, hence the name micro switch, also known as sensitive switch or snap-action switch. Introduction The micro s...
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What is RGB LED?
Aug , 21 2020
The introduction of RGB The RGB color mode is a color standard in the industry. It obtains various colors by changing the three color channels of red (R), green (G), and blue (B) and superimposing them with each other. And RGB is the color representing the three channels of red, green, and blue. This standard includes almost all the colors that human vision can perceive, and it is one of the most ...
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How do the backlight function of LCD clock work？
Sep , 30 2020
The above picture is the backlight driver circuit diagram of a display screen (AUO M190ETN01.0 ,19") I designed before. This article is going to take this as an example to explain how to design an LED backlight driver circuit and the related principles behind it. 1. Basic principle analysis Large-size display screens are currently mainly LCDs. The LCD itself does not emit light. If you want t...
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How does the light guide plate work？
Oct , 08 2020
Principle of light guide plate LCD light guide plate lighting technology was first invented by Japan mingtuo company in 1986, known as edge light, which is the mainstream method of notebook computer LCD backlight lighting. Its working principle is that the pure white light emitted by the cold cathode fluorescent tube (line light source) is introduced from the end face of the transparent plate and ...
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