zenith prism

См. также в других словарях:

• zenith eyepiece — noun : an eyepiece or adapter containing a right angle prism or a plane mirror to reflect the rays from an object near the zenith to the side of a refracting telescope for more convenient observation called also diagonal eyepiece …   Useful english dictionary

• Geodesy — (pronEng|dʒiːˈɒdɪsi [OED] ), also called geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three dimensional time varying… …   Wikipedia

• Vector notation — This page is an overview of the common notations used when working with vectors, which may be spatial or more abstract members of vector spaces.The common typographic convention for representing a vector is upright boldface type, as in v for a… …   Wikipedia

• List of CRT video projectors — The is a complete list of front projection CRT video projectors.List of CRT projectors List of CRT video projectors/row template|name=Videobeam 1000 |maker=Advent |date=1973 [According to an article in a late 1974 edition of Popular Science… …   Wikipedia

• Star diagonal — A star diagonal is an angled mirror or prism used in telescopes that allows viewing of objects that are at a 90° angle from the direction the telescope is pointing. It allows convenient and comfortable viewing when the telescope is pointed at, or …   Wikipedia

• Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …   Wikipedia

• History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …   Wikipedia

• Phonevision — Infobox Network network name = Phonevision (KS2XBS) network headquarters = Chicago, IL network type = Pay television network (movies) available = USA owner = Zenith Electronics launch date = 1951 key people = Eugene F. McDonald past names =… …   Wikipedia

• Zenit (camera) — This article is about the Russian camera brand. For the astronomic or geodetic instruments directed to the zenith, see Zenith camera. : For other uses, see Zenit (disambiguation). Zenit is a Russian (and formerly Soviet) camera brand manufactured …   Wikipedia

• Circumzenithal arc — July 10, 2005. High above the horizon over Grand Forks, ND, January 2007 …   Wikipedia

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium