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The magnetized strip makes the amorphous strip respond much more strongly to the detectors, because the DC magnetic field given off by the strip offsets the magnetic anisotropy within the amorphous metal. The tag can also be deactivated by demagnetizing the strip, making the response small enough so that it will not be detected by the detectors.
The tape consists of a magnetic metal strip embedded in a strip of thick, clear adhesive tape. This tape is usually affixed deep between the pages of a paperback book, or between the spine and binding for a hardcover book. When the magnetic strip in the tape is sensitized, an alarm will sound when the item passes through a special gate ...
A collection of refrigerator magnets A refrigerator magnet displaying a sexual assault hotline's telephone number. A refrigerator magnet or fridge magnet is a small magnet, often attached to an artistic or whimsical ornament, which may be used to post items such as shopping lists, Christmas cards, child art or reminders on a refrigerator door, or which simply serves as decoration.
A combination between a whiteboard and a cork bulletin board Original early 1960s ad for "Plasti-slate", the first whiteboard/dry erase board invented by Martin Heit. It has been widely reported that Korean War veteran and photographer Martin Heit and Albert Stallion, an employee at Alliance, a leading flat rolled steel sheet supplier should be credited with the invention of the whiteboard in ...
Two shady elementary school teachers were booted from their Texas classroom after allegedly slapping special stickers containing melatonin on their students to keep them quiet.
In 1960, while at IBM, Parry invented the magnetic stripe card for use by the U.S. Government. [3] He had the idea of gluing short pieces of magnetic tape to each plastic card, but the glue warped the tape, making it unusable. When he returned home, Parry's wife Dorothea was using a flat iron to iron clothes.
A Magna Doodle drawing board. Magna Doodle is a magnetic drawing toy, consisting of a drawing board, a magnetic stylus, and a few magnet shapes.Invented in 1974 by Pilot Corporation, [1] over forty million units have been sold to date worldwide, under several brands, product names and variations, including Tyco and Mattel/Fisher Price.
Thousands of sets of high-powered magnetic balls sold at Walmart have been recalled after federal regulators issued a warning about the potential risk of choking, serious injuries and death.
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