The working principle of the metal detector is that the metal can interfere with the high -frequency variable magnetic field generated by the detector, which is actually detected by the conductive substance. , To interfere with the original magnetic field and be detected. Although cinnabar contains metal elements, it cannot conduct electricity itself, and of course it will not be detected. From a chemical perspective, cinnabar is also salt (mercury sulfide) instead of metal. Metals cannot be detected. Otherwise, the human body contains so many metal elements, can the detector respond to the human body?
Do not belong to,
This is the oxide of metal mercury, that is, the oxides of mercury.
The oxides of metal are not metal.
The working principle of the metal detector is that the metal can interfere with the high -frequency variable magnetic field generated by the detector, which is actually detected by the conductive substance. , To interfere with the original magnetic field and be detected. Although cinnabar contains metal elements, it cannot conduct electricity itself, and of course it will not be detected. From a chemical perspective, cinnabar is also salt (mercury sulfide) instead of metal. Metals cannot be detected. Otherwise, the human body contains so many metal elements, can the detector respond to the human body?