How Metal Detectors Work   If you have visited a beach, you must have seen someone searching for coins buried underground using a metal detector. These devices can detect hidden metals underground, especially coins. Recently, the use of metal detectors has increased in public airpo

  Although detecting gold is a wonderful and exhilarating thing, it is also full of challenges, especially if bad metal detectors are used, and they do not have excellent sensitivity to detect gold, as some devices suffer from a severe lack of sensitivity to small gold nuggets, and  Its