Metal detectors are used to check whether there are metals nearby. There are some metals which are dangerous and would not be allowed into some areas. For instance, grenades would not be allowed in highly populated public places especially if it is carried by a non-authorised person. Usually, people who carry such dangerous metals hide them and so this is where the metal detectors come in. however, not all metals can be detected by the metal detector. Therefore, if you are in a place where you are interested in detecting a given metal but there are many other metals in…
