under normal circumstances, the electronic scale will ring when it passes the security check. Electronic scale is a kind of weighing instrument, which is a tool to measure the mass of objects by Hooke's law or the lever balance principle of force. According to the structural principle, it can be divided into mechanical scale, electronic scale and electromechanical combination scale. Electronic scale is mainly composed of three parts: bearing system, force transfer system and indication system. Items with metal usually ring when they pass the security check.

does the electronic scale ring when it passes the security check?

The "golden eye" of the security check instrument is entirely realized by X-rays. It is an electronic device that sends the checked baggage into the X-ray inspection channel by means of a conveyor belt to complete the inspection.

x-rays are electromagnetic waves that can penetrate opaque objects such as wood, cardboard and leather. The security detector can present images of different colors on the screen according to the degree of absorption of X-rays by objects. For example, metals are shown in blue.