Answer:
Metal detectors helps in saving of lives of people, by detecting metal objects that can be harmful either to a person or society at large
Step-by-step explanation:
A metal detector is an electronic device that is used to detects objects that are mental within a close proximity.
Metal detectors are useful in saving of lives pf people by searching or detecting any objects that have a mental inclusions or objects that lies underground. with the help of a sensor attached in the metal detectors, it can be used to track objects that are harmful to an individual or the environment
Mental detectors are used in the airport, with devices such as the walk through scanners which helps in detecting passengers carrying anything that is harmful or prohibited such as guns, knives.
It is also useful in areas like hospitals and prisons, and other types of research work. metal detectors is also an important tool in historic research