Armed with metal ... detector search coil passes over a piece of metal, the magnetic field is disturbed, and so… it creates a change in energy in the receiver coil.” Jose Luque Olmedo//Getty ...

as you will be automatically alerted by an icon in the bottom left corner of the screen when a buried cache is nearby. When this happens, follow the prompt to pull out the Metal Detector ...

Many school administrators see metal detectors as a quick fix for gun violence. But do they actually make schools safer, or are they just a Band-Aid solution? Let’s explore: When the cat's away ...