QINGHUA SCIENCE & EDUCATION EQUIPMENT CO.,LTD. QINGHUA ELECTRONIC INSTRUMENT CO.,LTD.
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knowledge
The role of goggles
Some friends who are usually interested in the military or like to play games may have seen goggles, especially the special forces in various game works. They are very handsome in training clothes and goggles and masks. Some friends may simply think that the main function of the goggles here is to look good. There are some features like night vision, but not really. These goggles also have an important role in protecting the user's eyes and avoiding eye injuries.
2020
12-17
Goggles: the role and efficacy of goggles
Goggles can prevent the radiation source light from causing harm to the eyes, and to put it bluntly, goggles are a kind of filter. There are two types, one is absorption heat pump, one is double beam, and the previous one is used more. This kind of light source that can digest and absorb some light wavelengths and allow other light wavelengths to pass through, thus showing an inevitable hue, and the hue displayed is the through-light hue.
11-27
Goggles: the necessity of goggles maintenance
In the whole process of industrial production, both eyes are injured. Some non-hydrolytic radiation sources are injured in both eyes, so everyone should wear goggles to maintain everyone at work, and wear goggles suitable for their own face shape during work. The type of goggles you need depends on the theme activity you are practicing. You can not generally maintain your eyes from collision, debris or damage, here, goggles maintenance essential necessity!
11-24
Scientific and educational instruments: cleaning and cleanliness maintenance of electrostatic suit
Electrostatic suit are often used in some industries that require dust-free, such as bioengineering, pharmaceuticals, semiconductors and other businesses. The production sites of these companies need low dust in the production environment, but electrostatic suit are very easy to sweat, and sweat will reduce the characteristics of electrostatic suit, so it is necessary to clean it frequently.
11-02
Scientific and educational instruments: the importance of electrostatic suit for the protection of physical instruments
In winter, the damage of static electricity to physical instruments and equipment cannot be ignored. Why do physical instruments invest so much money in anti-static measures? Afraid of being hurt by static electricity! So how to avoid electrostatic damage to laboratory physical instruments? 1. How to generate static electricity? 2. Why are physical instruments prone to electrostatic breakdown? 3. What measures can we take to prevent static electricity?
10-22
Scientific and educational instruments: maintenance and maintenance of experimental instruments
The maintenance and maintenance of experimental instruments must implement the principle of "equal emphasis on maintenance and prevention", achieve regular maintenance, mandatory, and correctly handle the relationship between use, maintenance and repair. Do a good job in cleaning, lubricating, adjusting, tightening and anti-corrosion of experimental instruments and scientific and educational instruments, carry out daily maintenance and regular maintenance, and strictly abide by the cycle and inspection and maintenance items specified in the instruction manual.
10-19
Scientific and educational instruments: rules for the placement of experimental instruments in the laboratory
Whether the laboratory design plan is reasonable is very important, and the placement of experimental instruments has certain basis. So how can the experimental instruments operate normally without causing interference? I believe everyone is also very concerned about this problem. Let's look at the rules for the placement of experimental instruments.
10-12
Science and education instrument: what are the three ball instrument pay attention to matters?
The three-ball instrument is an intuitive teaching instrument that vividly depicts the relative motion law between the day, the earth and the moon. It can simulate the relative position of the day, the earth and the moon in the universe, and can vividly show the operation state of the earth and the moon. Explain the various natural phenomena arising from it scientifically.
09-21
Science and education instrument: three ball instrument demonstration instructions (below)
Scientific and educational instruments: three-ball instrument, due to the earth's ten kinds of tilted body revolution and rotation, the northern hemisphere winter days short night long, summer days long night short. The Southern Hemisphere is the opposite.
09-17
Science and education instrument: three ball instrument demonstration instructions (on)
Science and education instrument: three ball instrument is to absorb the length of similar products, carefully designed and developed. Experiments show that it has the characteristics of accurate and stable operation, simple and flexible operation, beautiful and novel structure, firm and durable.
09-01
