Mirrors (film) — For the film named The Mirror, see The Mirror (film). Mirrors Theatrical release poster Directed by Alexandre Aja … Wikipedia
mirrors — The looking glass is one of the handful of domestic items which have attracted more than their fair share of beliefs. Opie and Tatem identify fourteen different superstitions, and unlike those associated with the *fire, many of them can be… … A Dictionary of English folklore
Vertical-cavity surface-emitting laser — The vertical cavity surface emitting laser (VCSEL; [v ɪxl] ) is a type of semiconductor laser diode with laser beam emission perpendicular from the top surface, contrary to conventional edge emitting semiconductor lasers (also in plane lasers)… … Wikipedia
Vertical-external-cavity surface-emitting-laser — A vertical external cavity surface emitting laser (VECSEL) is a small semiconductor laser similar to a vertical cavity surface emitting laser (VCSEL). VECSELs are used primarily as near infrared devices in laser cooling and spectroscopy, but have … Wikipedia
Mirror — looking glass redirects here. For other uses, see Looking Glass (disambiguation). This article is about wave reflectors (mainly, specular reflection of visible light). For other uses, see Mirror (disambiguation). A mirror, reflecting a vase A… … Wikipedia
Non-reversing mirror — A Non reversing mirror is a mirror that presents its subject as it would be seen from the mirror. It is possible to make a non reversing mirror by connecting two regular mirrors at their edges at a 90 degree angle. If you position the join so… … Wikipedia
Fused quartz — A sphere manufactured by NASA out of fused quartz for use in a gyroscope in the Gravity Probe B experiment. It is one of the most accurate spheres ever created by humans, differing in shape from a perfect sphere by no more than 40 atoms of… … Wikipedia
John Brashear — Dr. John Alfred Brashear (November 24,1840 ndash; April 8,1920) was an American astronomer and instrument builder. Life and work Brashear was born in Brownsville, Pennsylvania, a town 35 miles (56 km) south of Pittsburgh along the Monongahela… … Wikipedia
optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… … Universalium
Reflecting telescope — 24 inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute. A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light… … Wikipedia
