What can people screening see?When we travel in public places, we will pass through people screening. Everyone knows that people screening is to detect dangers, such as metal objects. When the human body carries illegal metal objects through the people screening, the police will be called. So you ma

What is people screening?James Clerk Maxwell proved that force, magnetism, and electricity are related. That is, when current is applied to the copper wire coil wound on the metal nail, the metal nail is magnetized. The people screening is to use this scientific principle to detect whether there are

Does X-ray baggage scanner have radiation?Many people may be concerned that although X-rays are not harmful to digital products or other objects, they are very harmful to the human body. So is the X-ray baggage scanner safe? In fact, such worries are unnecessary, because in actual situations, the X-