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Sand-colored VS-50 mine intended for use in desert environments (shown beside a wristwatch, for scale). An anti-personnel mine or anti-personnel landmine (APL) is a form of mine designed for use against humans, as opposed to an anti-tank mine, which target vehicles. [1]
M14 mine with safety clip fitted. The U-shaped safety clip (with green pull-cord attached) and location of the yellow arrow on the pressure plate indicate that this mine has not been armed. The M14 mine "Toepopper" is a small (56 mm [2.2 in] diameter) anti-personnel land mine first deployed by the United States circa 1955.
A land mine can be triggered by a number of things including pressure, movement, sound, magnetism and vibration. [43] Anti-personnel mines commonly use the pressure of a person's foot as a trigger, but tripwires are also frequently employed. Because modern anti-vehicle mines usually employ magnetic triggers, they can detonate even if the victim ...
An inexperienced deminer might detect and render safe the pull-fuze, but then be killed when he lifted the mine, triggering the M5 pressure-release firing device underneath. The lower diagram shows two anti-tank landmines connected by a cord attached to the upper mine's carrying handle.
Pressure is maintained on the separator by use of a gas backpressure valve on each separator or with one master backpressure valve that controls the pressure on a battery of two or more separators. The optimum pressure to maintain on a separator is the pressure that will result in the highest economic yield from the sale of the liquid and ...
Penning–Malmberg traps have been used to study a variety of transport mechanisms. Figure 2 shows an early study of confinement in a PM trap as a function of a background pressure of helium gas. At higher pressures, transport is due to electron-atom collisions, while at lower pressures, there is a pressure-independent particle loss mechanism.
A restrictive flow orifice (RFO) is a type of orifice plate.They are used to limit the potential danger, damage, or wastage of an uncontrolled flow from, for example, a compressed gas cylinder [1] [2] They are generally not limiting the flow during normal operation but if a fault or failure occurs causing uncontrolled flow the orifice will present a restriction, limiting the flow.
Positive air pressure will push the cover up, acting as an early warning device. The underside of the cover (centre image) is kept moist by condensation occurring and insects that go back up the drain pipe get stuck to the walls of the cover. All plumbing fixtures have traps in their drains; these traps are either internal or external to the ...