Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr … Wikipedia
Street light — A street light, lamppost, street lamp, light standard or lamp standard, is a raised source of light on the edge of a road, turned on or lit at a certain time every night. Modern lamps may also have light sensitive photocells to turn them on at… … Wikipedia
Sun Blindness Music — Infobox Album Name = Sun Blindness Music Type = Compilation Album Artist = John Cale and the Theatre of Eternal Music Released = 1965 68 Recorded = 1965 68 Genre = Drone, Experimental Rock, Avant Garde Length = 64:24 Label = Table of the Elements … Wikipedia
Traffic light — The traffic light, also known as traffic signal, stop light, traffic lamp, stop and go lights, robot or semaphore, is a signaling device positioned at a road intersection, pedestrian crossing, or other location. Its purpose is to indicate, using… … Wikipedia
Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… … Universalium
List of common misconceptions — This incomplete list is not intended to be exhaustive. This is a list of current, widely held, false ideas and beliefs about notable topics which have been reported by reliable sources from around the world. Each has been discussed in published… … Wikipedia
photophthalmia — Keratoconjunctivitis caused by ultraviolet energy, as in snow blindness, exposure to an ultraviolet lamp, arc welding, or the short circuit of a high tension electric current. SEE ALSO: photoretinopathy. [photo + G. ophthalmos, eye] … Medical dictionary
Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… … Wikipedia
lamp — Illuminating device; source of light. SEE ALSO: light. annealing l. an alcohol l. with a soot free flame used in dentistry to drive off the protective NH3 gas coating from the surface of cohesive gold foil. Edridge Green l. a lantern used to … Medical dictionary
Culture of the United Kingdom — The Proms is an eight week summer season of daily orchestral classical music concerts, on the last night with some traditional patriotic music of the United Kingdom.[1][2] … Wikipedia