roof lens
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Single-lens reflex camera — The single lens reflex (SLR) camera uses an automatic moving mirror system which permits the photographer to see exactly what will be captured by the film or digital imaging system, as opposed to non SLR cameras where the view through the… … Wikipedia
Digital single-lens reflex camera — Nikon D700 full frame (FX) digital SLR camera … Wikipedia
Luneburg lens — Cross section of the standard Luneburg lens, with blue shading proportional to the refractive index A Luneburg lens (originally Lüneburg lens, often incorrectly spelt Luneberg lens … Wikipedia
Pole of a lens — Pole Pole, n. [As. p[=a]l, L. palus, akin to pangere to make fast. Cf. {Pale} a stake, {Pact}.] 1. A long, slender piece of wood; a tall, slender piece of timber; the stem of a small tree whose branches have been removed; as, specifically: (a) A… … The Collaborative International Dictionary of English
Little Traverse Light — Infobox Lighthouse caption = The Little Traverse Lighthouse with its replacement light tower and fog bell location = Harbor Springs, Michigan coordinates = coord|45|25|08|N|84|58|42|W|region:US type:landmark yearlit = 1884 automated =… … Wikipedia
Tawas Point Light — Infobox Lighthouse caption = The lighthouse in 2008 location = Tawas, Michigan coordinates = coord|44.254| 83.449 yearbuilt = 1875 yearlit = 1877 automated = yeardeactivated = foundation = construction = Brick and masonry shape = Conical height … Wikipedia
Point Reyes Lighthouse — Infobox Lighthouse caption = Point Reyes Light location = Point Reyes, California coordinates = coord|37.9957|N|123.02327|W yearlit = 1870 automated = 1975 foundation = Concrete construction = Cast Iron with Brick Lining shape = 16 sided… … Wikipedia
Horton Point Light — is a lighthouse on the north side of Eastern Long Island, New York near Southold. Infobox Lighthouse caption = Horton Point Light location = Long Island Sound, Southold, New York coordinates = coord|41|05|6.51|N|72|26|44.77|W yearlit = 1857… … Wikipedia
Binoculars — Binocular telescopes, or binoculars (also known as field glasses), are two identical or mirror symmetrical telescopes mounted side by side and aligned to point accurately in the same direction, allowing the viewer to use both eyes (binocular… … Wikipedia
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium