observation mirror
101Mavis Wilton — Coronation Street …
102Rockefeller Center — Pour les articles homonymes, voir Rockefeller. Le Rockefeller Center est un complexe commercial construit par la famille Rockefeller composé de dix neuf bâtiments. Il est situé dans le quartier de Midtown, entre la 5e avenue et l avenue des… …
103Rockefeller center — Pour les articles homonymes, voir Rockefeller. Le Rockefeller Center est un complexe commercial construit par la famille Rockefeller composé de dix neuf bâtiments. Il est situé dans le quartier de Midtown, entre la 5e avenue et l avenue des… …
104Rockfeller Center — Rockefeller Center Pour les articles homonymes, voir Rockefeller. Le Rockefeller Center est un complexe commercial construit par la famille Rockefeller composé de dix neuf bâtiments. Il est situé dans le quartier de Midtown, entre la 5e avenue et …
105electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
106seismograph — seismographic /suyz meuh graf ik, suys /, seismographical, adj. /suyz meuh graf , grahf , suys /, n. any of various instruments for measuring and recording the vibrations of earthquakes. [1855 60; SEISMO + GRAPH] * * * Introduction… …
107photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
108Sextant — This article is about the sextant as used for navigation. For the astronomer s sextant, see Sextant (astronomical). : For the history and development of the sextant see Reflecting instruments A sextant is an instrument generally used to measure… …
109Adaptive optics — (AO) is a technology used to improve the performance of optical systems by reducing the effects of rapidly changing optical distortion. It is used in astronomical telescopes and laser communication systems to remove the effects of atmospheric… …
110Southern African Large Telescope — Infobox Telescope bgcolour = name = Southern African Large Telescope caption = organization = National Research Foundation of South Africa location = Sutherland, South Africa coords = altitude = weather = wavelength = Optical built = 2005 website …
