Metal detector

A metal detector is an electronic device that locates metallic objects underground or hidden within other materials. It works by generating an electromagnetic field through its coil; when the coil passes over a metal object, it causes a change in this field. The detector senses this change and alerts the user, typically through sound or visual signals. Metal detectors are widely used in archaeology, security, and treasure hunting to find coins, relics, or other metal items buried beneath the surface. They are precise tools that help locate metals without unnecessary digging or disruption.