Useful english dictionary. 2012.
Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible … Wikipedia
Induction coil — An induction coil or spark coil (archaically known as a Ruhmkorff coil) is a type of disruptive discharge coil. It is a type of electrical transformer used to produce high voltage pulses from a low voltage DC supply. To create the flux changes… … Wikipedia
History of street lighting in the United States — The use of street lighting was first recorded in the Arab Empire from the 9th 10th centuries, [Fielding H. Garrison, History of Medicine :quote| The Saracens themselves were the originators not only of algebra, chemistry, and geology, but of many … Wikipedia
Gas lighting — For other uses, see Gaslight (disambiguation). Gas lighting is production of artificial light from combustion of a gaseous fuel, including hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, or natural gas. Before… … Wikipedia
Neon lighting — Times Square, New York City, has been famous for elaborate neon lighting displays since th … Wikipedia
Timeline of lighting technology — Timeline of lighting technology* Since the dawn of man, about 200,000 years ago, people use the sun as their main source of light. * 70,000 BCE A hollow rock or shell or other natural found objects was filled with moss or a similar material that… … Wikipedia
Compact fluorescent lamp — Low energy light bulb redirects here. For other low energy bulbs, see LED lamp. The tubular type compact fluorescent lamp is one of the most popular types in Europe … Wikipedia
Electrodeless lamp — In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by … Wikipedia
QL — may mean:* The Philips QL, an induction lighting system by Philips * The Sinclair QL, a 1980s home computer by Sinclair Research Ltd * The Bedford QL three ton military 4x4 truck * The IATA airline designator of Aero Lanka * Quantum Leap, a… … Wikipedia
History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… … Wikipedia
