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Are you ready for the Live Room of the Canton Fair?
May , 19 2020
Today, I would like to introduce some methods to you, let's do everything possible to lay out and improve ahead of time before the start of the Canton Fair, and then win the first place in the online Canton Fair! 1. Planning of LVB content. First of all, you need to be clear about the theme. Topics can be: the company's brand story, the company's technical strength, the company's philosophy, award...
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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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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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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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The harm of Ultraviolet radiation to Human body
May , 15 2020
Ultraviolet rays have the most obvious effect on the skin and eyes of the human body. The absorption of ultraviolet rays by the skin is related to its wavelength. The shorter the wavelength, the smaller the depth of penetration into the skin, the weaker the melanin deposition after irradiation, the longer the wavelength, the greater the depth of penetration into the skin, and the stronge...
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Advantages and disadvantages of ultraviolet rays
May , 12 2020
UV advantages: 1) disinfection and sterilization; 2) promote bone development; 3) it is good for blood color; 4) it can occasionally treat some skin diseases; 5) it can promote mineral metabolism and vitamin D formation in the body. Ultraviolet disadvantages: 1) cause skin aging to produce wrinkles; 2) produce spots; 3) cause dermatitis; 4) cause skin cancer. Sterilization principle of UVC. Among ...
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Wavelength classification and application fields of ultraviolet light
May , 12 2020
According to the different biological effects, UV is divided into four bands according to the wavelength: long-wave UVA, medium-wave UVB, short-wave UVC and vacuum wave UVD. The longer the wavelength, the stronger the penetration. UVA. The wavelength of long-wave UVA, is between 320nm and 400nm, which is also called long-wave black spot effect ultraviolet. It has a strong penetrating pow...
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Replacement of quartz clock movement
Apr , 28 2020
Quartz clock movement is a common movement variety of high-end watches on the market, many famous watches use quartz clock movement, after the quartz clock movement has been used for a period of time, it needs to be replaced, so that the clock can work better, the following is to introduce the replacement of the quartz clock movement, so that you can replace the quartz clock movement yourself. As ...
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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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Which is better for the quartz clock movement to jump seconds or sweep seconds?
Apr , 28 2020
Quartz clock movement jump seconds and sweep seconds are two forms, quartz clock movement jump seconds or sweep seconds which is better? The following is to introduce you to the quartz clock movement jump seconds and sweep seconds of the two forms, in order to facilitate your purchase. The second-jumping movement means that the second hand of the clock will beat and turn and make a slight "ti...
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