A metal detector used in airports is actually a large coil of wire carrying a small current. Explain how it detects a gun, even if it is wr

Question

A metal detector used in airports is actually a large coil of wire carrying a small current. Explain how it detects a gun, even if it is wrapped in towels in a suitcase.

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Thạch Thảo 2 months 2021-07-24T14:02:20+00:00 1 Answers 5 views 0

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    2021-07-24T14:04:17+00:00

    Metal detectors work by transmitting an electromagnetic field from the search coil into the ground. Any metal objects (targets) within the electromagnetic field will become energised and retransmit an electromagnetic field of their own. The detector’s search coil receives the retransmitted field and alerts the user by producing a target response. metal detectors are capable of discriminating between different target types and can be set to ignore unwanted targets.

    1. Search Coil

    The detector’s search coil transmits the electromagnetic field into the ground and receives the return electromagnetic field from a target.

    2. Transmit Electromagnetic Field (visual representation only – blue)

    The transmit electromagnetic field energises targets to enable them to be detected.

    3. Target

    A target is any metal object that can be detected by a metal detector. In this example, the detected target is treasure, which is a good (accepted) target.

    hope this helps PLEASE MARK AS BRAINLIEST:)

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