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  2. 7 Best Metal Detectors of 2023, Reviewed by Experts - AOL

    www.aol.com/7-best-metal-detectors-2023...

    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 ...

  3. 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. Best Value ... so it isn’t exactly cheap—you may notice that it costs more than our Best Overall pick— but you’re getting a ...

  4. Metal detector - Wikipedia

    en.wikipedia.org/wiki/Metal_detector

    A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft [dubious – discuss], and a variable-shaped pickup coil. When the coil nears metal, the control box ...

  5. Magnetometer - Wikipedia

    en.wikipedia.org/wiki/Magnetometer

    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. Magnetometers are capable of detecting large objects, such as cars, at over 10 metres (33 ft), while a conventional metal detector's range is ...

  6. Crystal radio - Wikipedia

    en.wikipedia.org/wiki/Crystal_radio

    A crystal detector includes a crystal, usually a thin wire or metal probe that contacts the crystal, and the stand or enclosure that holds those components in place. The most common crystal used is a small piece of galena; pyrite was also often used, as it was a more easily adjusted and stable mineral, and quite sufficient for urban signal ...

  7. The Best Gifts For Wives That Show You Really Thought ... - AOL

    www.aol.com/wh-editor-approved-gifts-bound...

    This little device looks like a sleek, white smoke detector, but just insert a scented vial, plug it into a wall, and you can fill any room with up to 120 hours of fragnance with a connected app ...

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