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vehicle or trailer. Rapier is a surface-to-air missile developed for the British Army to replace their towed Bofors 40/L70 anti-aircraft guns. The system is unusual as it uses a manual optical guidance system, sending guidance commands to the missile in flight over a radio link. This results in a high level of accuracy, therefore a large ...
Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Fixation disparity. Fixation disparity is a tendency of the eyes to drift in the direction of the heterophoria. While the heterophoria refers to a fusion-free vergence state, the fixation disparity refers to a small misalignment of the visual axes when both eyes are open in an observer with normal fusion and binocular vision. [1]
The FMTV's origins trace back to a U.S. Army Training and Doctrine Command requirements document issued in 1983 for a Medium Tactical Truck (MTT), the intended replacement for the in-service 2.5-ton truck. In July 1984, a program to look at a future 5-ton truck procurement to replace in-service 2.5- and 5-ton trucks began. Cost analysis ...
The prism fusion range ( PFR) or fusional vergence amplitude is a clinical eye test performed by orthoptists, optometrists, and ophthalmologists to assess motor fusion, specifically the extent to which a patient can maintain binocular single vision ( BSV) in the presence of increasing vergence demands. Motor fusion is largely accounted to ...
Yet Cosm Los Angeles definitely has entertainment on its mind. It will no doubt recall Las Vegas' all-encompassing arena Sphere. Yet Cosm is cozier. The centerpiece of the venue is its dome, with ...
1950. In 1950 the next generation of tactical trucks were being developed. Sizes were rationalized, with 1⁄4 and 3⁄4 -ton 4x4s and 21⁄2, 5, and 10-ton 6x6s. Trucks were military standard designs, 6x6 trucks used common cabs and similar fender and hood styles. [ 14] M422 1⁄4 -ton 4x4. M38A1 1⁄4 -ton 4x4. M274 1⁄2 -ton 4x4.
Satellite imagery has also shown North Korea building a wall-like structure along portions of the North Korean side of the demarcation zone (DMZ), which is a 2.5 miles thick buffer zone, half on ...