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2. Metal detector - Wikipedia

   en.wikipedia.org/wiki/Metal_detector

   The most common type of metal detector is a hand-held metal detector or coil-based detectors using oval-shaped disks with built-in copper coils. The search coil works as sensing probe and must be moved over the ground to detect potential metal targets buried underground.

3. This handheld metal detector is a fun way to hunt for ... - AOL

   www.aol.com/lifestyle/handheld-metal-detector...

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

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

   Stan Ross started metal detecting in 1971. In 2012, while living on the beachfront in Seal Beach, CA, he joined The Ring Finders, a directory of metal detecting specialists that help people find ...

5. Gerhard Fischer (inventor) - Wikipedia

   en.wikipedia.org/wiki/Gerhard_Fischer_(inventor)

   Although the actual inventor of the hand-held metal detector is disputed, the hand-held metal detector was made in 1925 and was first patented by Dr. Gerhard Fisher in 1931. A metal detector had been invented some forty years earlier (1881) by Alexander Graham Bell for the sole purpose of locating a lead bullet in President James A. Garfield.

6. Counter-IED equipment - Wikipedia

   en.wikipedia.org/wiki/Counter-IED_equipment

   Non-linear Junction Detector (NLJD): A portable NLJD allows the operator to search voids and areas where they are unable to gain physical or visual access, in order to detect electronic components and determine if the area is free from IEDs. Laser IED Detection: Scientists are learning to adapt lasers to detect, or defeat, IEDs. [19]

7. The Best Place to Put a Carbon Monoxide Detector (and 5 ... - AOL

   www.aol.com/lifestyle/best-place-put-carbon...

   Similarly, it's a good idea to have a carbon monoxide detector near an attached garage in case fumes seep into the home. Related: The 9 Best Smoke Detectors of 2024 to Give You Peace of Mind.