All objects in nature, whether they are Arctic glaciers, flames, human bodies, or even the extremely cold deep space of the universe, will have infrared radiation as long as their temperature is above absolute zero - 273°C. This is due to the thermal movement of molecules inside the object. Its radi

With the development of social economy, there are more and more methods and equipment for safety inspection, and liquid inspection is one of them. I believe most people should have undergone liquid inspection. When you take some liquid into the car or participate in activities, the corresponding sec

With the development of social economy, there are more and more methods and equipment for safety inspection, and liquid inspection is one of them. I'm sure you're not familiar with liquid testing. If you take some liquids with you when you take a bus or take part in any activity, the security guard