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Students will be required to walk through the detector single file and will not have to remove their backpacks or gym bags. Weapon screening detectors to go ‘live’ Friday at Wichita high ...
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.
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]
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.
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Kansas allows permitless carry for those 21 and older, even when on a college campus. According to The Trace, "state universities can still prohibit guns from buildings if they install metal detectors and security guards at entrances." [5] In 2021, Kansas lowered the age to receive a conceal carry permit to age 18. [6]