metal detector


Metal etectors use electromagnetic induction to detect metal. Uses include de-mining (the detection of land mines), the detection of weapons such as knives and guns, especially at airports, geophysical prospecting, archaeology and treasure hunting. Metal detectors are also used to detect foreign bodies in food, and in the construction industry to detect steel reinforcing bars in concrete and pipes and wires buried in walls and floors.

Trivia about metal detector

  • All passengers on U.S. airline flights are required to pass through one of these machines
  • (Kelly of the Clue Crew shows a scanner of some sort on the conveyor belt at the See's candy factory.) Before packaging, the candy goes through this electronic device to make sure that, for instance, the nuts inside aren't the hardware kind; if so, it's dropped from the belt
  • Iraq administrator Paul Bremner's line "You cannot wand a million people" referred to a hand-held one
  • Device used by Terry Herbert to find the "Staffordshire Hoard" of buried Anglo-Saxon gold