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Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex.
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
technical manuals. Star Trek Technical Manuals are a number of both official and fan-produced works detailing the technology of the fictional Star Trek universe; most pertain to starship design, though others target equipment used in the various Star Trek television series and films. Franz Joseph Schnaubelt published the original Star Fleet ...
Poochons love to play and stay busy. They're intelligent dogs that love puzzles, games, and activities. In fact, you'll probably get tired of playing and trying to keep up with them before they do ...
Mariska Hargitay and Peter Hermann were dressed to the nines while posing on the red carpet during what appeared to be a fabulous date night on Tuesday. The celebrity couple looked equal parts ...
United States Army Field Manuals. FM-34-45. United States Army Field Manuals are published by the United States Army 's Army Publishing Directorate. They contain detailed information and how-tos for procedures important to soldiers serving in the field. As of July 2007, some 542 field manuals were in use.
A mom delivered an unforgettable reply when her daughter called her “fat.”. “Today, my small daughter told me that she didn’t want to be fat like me,” Sharon Johnson, a mother of six in ...
British railway technical manuals. The railway network of Great Britain is operated with the aid of a number of documents, which have been sometimes termed "technical manuals", [1] because they are more detailed than the pocket-timetables which the public encounters every day. Historically, they were classified PRIVATE and not for publication ...