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The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...
Air Koryo: Features North Korean national colors on the livery and flag on the tail, as well as a crane. Air Malta: Maltese cross. Maltese Cross on an Air Malta Airbus A319. Air Namibia: Namibian flag. Air Puerto Rico: The Puerto Rican flag inside a sun. [citation needed] Air Serbia: stylized double-headed eagle inspired by the Serbian coat-of ...
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
ColorChecker. The ColorChecker Color Rendition Chart (often referred to by its original name, the Macbeth ColorChecker[ 1] or simply Macbeth chart[ 2]) is a color calibration target consisting of a cardboard-framed arrangement of 24 squares of painted samples. The ColorChecker was introduced in a 1976 paper by McCamy, Marcus, and Davidson in ...
SMPTE ECR 1-1978 (SDTV) In a SMPTE color bar image, the top two-thirds of the television picture contain seven vertical bars of 75% intensity. In order from left to right, the colors are white or gray, yellow, cyan, green, magenta, red, and blue. [ 18] The choice of white or gray depends on whether that bar's luminance is 100% or not.
Military camouflage is the use of camouflage by armed forces to protect personnel and equipment from observation by enemy forces. Textile patterns for uniforms have multiple functions, including camouflage, identifying friend from foe, and esprit de corps. [ 1] The list is organized by pattern; only patterned textiles are shown.
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