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Safety glass is glass with additional safety features that make it less likely to break, or less likely to pose a threat when broken. Common designs include toughened glass (also known as tempered glass), laminated glass , and wire mesh glass (also known as wired glass).
A taut wire perimeter security system is an independent screen of tensioned tripwires usually mounted on a fence or wall. Alternatively, the screen can be made thicker to avoid the need for a supporting chain-wire fence.
In 1891 [3] Frank Shuman invented wired safety glass, for which he was granted a patent in 1892. [4] Additional patents were issued relating to the process of making wire glass and machines for making wire glass. In 1914 Shuman invented a process for making laminated safety glass, called safety glass, [5] and
Tempered or toughened glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. Tempering puts the outer surfaces into compression and the interior into tension .
Amorphous metal cores with special magnetic properties can even be employed in such articles as security tags and related devices. Cobalt and iron base alloys are used to produce anti-shoplifting labels and security papers. The glass-coated wire has also proven quite valuable in devices that are used to sense brain tumors and used in medical ...
Target said Wednesday that organized retail crime will fuel $500 million more in stolen and lost merchandise this year compared with a year ago.. Target’s inventory loss, called shrink, totaled ...
Listening devices of the East German security services. A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance, espionage and police investigations.
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