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Ballistic eyewear is a form of glasses or goggles that protect from small projectiles and fragments. For the U.S. military, choices are listed on the Authorized Protective Eyewear List (APEL). [ 1 ] Ballistic eyewear including examples that meet APEL requirements are commercially available for anyone who wishes to buy it.
In the early 20th century, goggles were worn by drivers of uncovered cars to prevent irritation of the eyes by dust or wind. [1] Likewise in the first ten years after the invention of the airplane in 1903 goggles became a necessity as wind blow became more severe as aircraft speeds increased and as protection against bugstrikes at high altitudes.
The Z-10's engine air intake is protected by a metal mesh to prevent foreign objects from being sucked in. [16] Newer variants can be installed with integrated inlet particle separators (IPS) for engine intake filtration, preventing harmful solid particulates such as sand and dust to damage the critical propulsion components. [22]
AN-6530 goggles saw use in nearly every type of U.S. flight crew position during World War II, particularly with pilots, gunners and observers who needed protection from glare, wind and debris. Expense in production technique, time, and materials and issues with lenses shattering and contributing to eye injury led to the development of the ...
Bull Gap Hill itself is a sand dune centrally located within the 115-mile (185 km) Bull Gap trail system. This system is composed mainly of 50-inch-wide (1,300 mm) one-way sand and loose dirt trails.
Fatal Vision goggles A person operating a driving simulation wearing Fatal Vision goggles. Fatal Vision goggles are a line of training tools for simulating the effects of alcohol and drug intoxication without actually using these substances. [1] [2] The devices have been used by some police departments. [3]
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