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A tripwire is a passive triggering mechanism. Typically, a wire or cord is attached to some device for detecting or reacting to physical movement.
Such tripwires may be attached to one or more mines — especially fragmentation or bouncing mines — in order to increase the area where triggering may occur.. Trip wires are frequently used in booby traps -- where either a tug on the wire, or the release of tension on it, will trigger the explosives.
Soldiers sometimes detect the presence of tripwires by spraying the area with Silly String. It will settle to the ground in areas where there are no wires. Where wires are present, the "strings" will rest on the taut wires without triggering the explosive, due to its light weight. It was used by U.S. troops in Iraq for this purpose.
Another detection method is the use of green line lasers to illuminate and thus expose trip and command wires. The bright laser beam reflects off of the tripwire and can be seen by the user.
- Martens, Ellin (19 November 2006). "Not So Silly String In Iraq". TIME.com. Retrieved 16 October 2007.
- "A Serious Use For Silly String". CBS News. 6 December 2006. Retrieved 16 October 2007.
- "FOX VIDEO: 'Silly String' is saving lives over in Iraq". The Raw Story. Archived from the original on 12 October 2007. Retrieved 16 October 2007.
- "Safe and reliable conveyor belt stopping, where and whenever it is needed". Eaton.
The conveyor trip switch, is a safety switch that has a pretension device which allows the trip wire to be tensioned.
- "Machine Safety 101". Compliance InSight Consulting Inc.
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