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  2. Unearth Your Next Hobby With These Expert-Recommended Metal ...

    www.aol.com/best-metal-detectors-uncover-buried...

    The Best Metal Detectors. Best Overall: Minelab Vanquish 440. ... If you want to bring a metal detector underwater, but you don’t have the budget for a high-end machine like the Excalibur II ...

  3. 7 Best Metal Detectors of 2023, Reviewed by Experts - AOL

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    The best metal detectors have a range of frequencies to detect different metals in different locations for a chance for find lost rings, old coins and gold 7 Best Metal Detectors of 2023, Reviewed ...

  4. Magnetic anomaly detector - Wikipedia

    en.wikipedia.org/wiki/Magnetic_anomaly_detector

    Another source estimates that a 100 m long and 10 m wide submarine would produce a magnetic flux of 13.33 nT at 500 m, 1.65 nT at 1 km and 0.01 nT at 5 km. [6] To reduce interference from electrical equipment or metal in the fuselage of the aircraft, the MAD sensor is placed at the end of a boom or on a towed aerodynamic device. [7]

  5. Submarine detection system - Wikipedia

    en.wikipedia.org/wiki/Submarine_detection_system

    Non-acoustic systems can work on a variety of different physical principles, including the use of magnetic anomaly detectors [1] and systems such as SOKS, which are believed to work by detecting phenomena such as trace chemicals, heat changes, and radioactivity left in a submarine's wake.

  6. Underwater search and recovery - Wikipedia

    en.wikipedia.org/wiki/Underwater_search_and_recovery

    Magnetometers can be used as metal detectors: they can detect only magnetic metals, but can detect such metals at a much greater distance than conventional metal detectors which rely on conductivity; they are capable of detecting large ferrous objects over considerable distances. Side-scan sonar and multi-beam sonar.

  7. These Top-Rated Metal Detectors Are up to 45% Off at Amazon - AOL

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