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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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7 things you don't know about humidity
May , 18 2020
1. The humidity of 100% doesn't mean it's going to rain. Humidity is a physical quantity used to describe the amount of water vapor in the air. There are many ways to express air humidity, of which the most commonly used is the "relative humidity" in meteorology. So what is relative humidity? Let's think of air as a sponge. It can hold at most a certain amount of water, say 1 liter. Then the relat...
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What is the concept of humidity in the weather forecast? What does it mean if the humidity is 100%?
May , 18 2020
The humidity forecast is mostly relative humidity, such as 100% here. 100% means that 100% of the water vapor can be contained in the air. If water vapor enters the air, it will condense into water. The upper limit of how much water vapor can be contained in the air is affected by temperature. The higher the temperature, the faster the water vapor molecules move and the less likely ...
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What kind of indoor temperature and hygrometer is more accurate?
May , 18 2020
There are three kinds of temperature and humidity meters commonly used: 1.the electronic temperature and humidity meter determines the humidity according to the electrical conductivity of the humidity sensitive resistor or humidity sensitive capacitor at different humidity. 2.mercury or alcohol thermometer, the humidity is measured by a thermometer with double glass tubes, one of which has a volat...
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Understand CE certification in one article
May , 25 2020
CE certification, which is limited to the basic safety requirements of products that do not endanger the safety of humans, animals and goods, rather than general quality requirements, the harmonized directive only stipulates the main requirements, which are standard tasks. Therefore, the accurate meaning is: the CE mark is a safety mark instead of a quality mark. It is the "main requirement" that ...
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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 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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Introduction to SLA 3D printing&how does SLA work?
Nov , 13 2020
What is 3D printing? Three-dimensional light-curing 3D printing (often referred to as SLA) is one of the most popular and common technologies in the field of additive manufacturing. It works by using a high-power laser to harden the liquid resin in the container to produce the desired 3D shape. In short, the process uses low-power lasers and photopolymerization to convert photosensitive liquids in...
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